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Professor Lyazid Djenidi

Professor

School of Engineering (Mechanical Engineering)

Career Summary

Biography

Research Expertise
- Mechanical Engineering - Fluid Mechanics - Turbulence - Computational fluid dynamics

Qualifications

  • PhD, University of Aix, Marseille II France
  • Master of Science, University of Aix, Marseille II France
  • Bachelor of Science, University of Aix, Marseille II France

Keywords

  • Computational fluid dynamics
  • Fluid Mechanics
  • Fluid mechanics
  • Heat transfer
  • Modelling of dynamic systems
  • Numerical simulation
  • Turbulence

Languages

  • French (Fluent)

Fields of Research

Code Description Percentage
091599 Interdisciplinary Engineering not elsewhere classified 65
091499 Resources Engineering and Extractive Metallurgy not elsewhere classified 35

Professional Experience

UON Appointment

Title Organisation / Department
Professor University of Newcastle
School of Engineering
Australia

Academic appointment

Dates Title Organisation / Department
1/01/2010 - 1/02/2010 Professor University of Grenoble
France
1/09/2008 - 1/02/2009 Professor University of Grenoble
France
1/11/2007 - 1/12/2007 Associate Professor Ecole Central d'Ingenieurs Generalists de Marseille (Central School of Engineers generalists Marseille)
France
1/11/2006 - 1/12/2006 Maitre de Conferece Ecole Generaliste d'ingenieurs de Marseille (Generalist School of engineers Marseille)
France

Membership

Dates Title Organisation / Department
Member

Conference Advisory Committee

International Symposuim on Engineering Turbulence Modelling and Measurements (ETMM)
Australia
1/01/2015 -  Member

Conference Advisory Committee

International Symposium on Turbulence and Shear Layer Phenomena (TSLP)
Australia
1/01/2015 -  Member

Conference Advisory Committee

International Symposium on Application of Laser Techniques to Fluids Flows (ALTFF)
Australia
1/01/2015 -  Member

International Reader for the ARC Funding Body

ARC
Australia

Invitations

Participant

Year Title / Rationale
2006 International Journal Articles
Organisation: Academic Journal Publishers Description: Referring International Journal articles: Journal of Fluid Mechanics; Physics of Fluids; Physics Letters A Experiments in Fluids International Journal of Heat and Fluid Flow European Journal of Mech. B/Fluids
2006 Invited Associate Professor
Organisation: Ecole Centrale d'Ingenieurs Generalistes de Marseille
2005 Lattice Boltzmann Simulation
Organisation: PSA Peugeot-Citroen Description: Invited to present to give a presentation of my numerical simulations.
1998 L. Djeindi: Turbulence modelling for CFD
Organisation: Workshop in Application for CFD in Engineering., Chemical Engineringn Newcastle Description: Invited to present a keynote paper.
Edit

Publications

For publications that are currently unpublished or in-press, details are shown in italics.


Chapter (1 outputs)

Year Citation Altmetrics Link
2014 Rajagopalan S, Lefeuvre N, Antonia RA, Djenidi L, 'Wake manipulation using control cylinders in a tandem arrangement', Lecture Notes in Mechanical Engineering 161-166 (2014)

© Springer-Verlag Berlin Heidelberg 2014.The drag reduction phenomenon of a circular cylinder is investigated, using an X-wire probe, by placing a smaller diameter control cylind... [more]

© Springer-Verlag Berlin Heidelberg 2014.The drag reduction phenomenon of a circular cylinder is investigated, using an X-wire probe, by placing a smaller diameter control cylinder of either circular or square cross-sectional upstream of the main circular cylinder. The separation between the two cylinders was chosen so as to minimise the overall drag of the main cylinder. Although both configurations resulted in drag reduction, the square control cylinder yielded a bigger reduction and had a greater impact on the mean velocity and turbulent velocity fluctuations in the wake. Both control cylinders led to a reduction in the wake half-width. Spectra in the near wake did not indicate any suppression in vortex shedding.

DOI 10.1007/978-3-642-40371-2_23
Co-authors Robert Antonia, Sundara Rajagopalan

Journal article (77 outputs)

Year Citation Altmetrics Link
2016 Djenidi L, Antonia RA, Lefeuvre N, Lemay J, 'Complete self-preservation on the axis of a turbulent round jet', Journal of Fluid Mechanics, 790 57-70 (2016)

© 2016 Cambridge University Press.Self-preservation (SP) solutions on the axis of a turbulent round jet are derived for the transport equation of the second-order structure funct... [more]

© 2016 Cambridge University Press.Self-preservation (SP) solutions on the axis of a turbulent round jet are derived for the transport equation of the second-order structure function of the turbulent kinetic energy , which may be interpreted as a scale-by-scale (s.b.s.) energy budget. The analysis shows that the mean turbulent energy dissipation rate, , evolves like ( is the streamwise direction). It is important to stress that this derivation does not use the constancy of the non-dimensional dissipation rate parameter ( and are the integral length scale and root mean square of the longitudinal velocity fluctuation respectively). We show, in fact, that the constancy of is simply a consequence of complete SP (i.e. SP at all scales of motion). The significance of the analysis relates to the fact that the SP requirements for the mean velocity and mean turbulent kinetic energy (i.e. and respectively) are derived without invoking the transport equations for and . Experimental hot-wire data along the axis of a turbulent round jet show that, after a transient downstream distance which increases with Reynolds number, the turbulence statistics comply with complete SP. For example, the measured agrees well with the SP prediction, i.e. , while the Taylor microscale Reynolds number remains constant. The analytical expression for the prefactor for (where is a virtual origin), first developed by Thiesset et al. (J. Fluid Mech., vol. 748, 2014, R2) and rederived here solely from the SP analysis of the s.b.s. energy budget, is validated and provides a relatively simple and accurate method for estimating along the axis of a turbulent round jet.

DOI 10.1017/jfm.2015.761
Co-authors Robert Antonia
2015 Tang SL, Djenidi L, Antonia RA, Zhou Y, 'Comparison between velocity- and vorticity-based POD methods in a turbulent wake', Experiments in Fluids, 56 (2015) [C1]

© 2015, Springer-Verlag Berlin Heidelberg.In this paper, the velocity-based POD and the vorticity-based POD have been systematically compared in three characteristic regions of t... [more]

© 2015, Springer-Verlag Berlin Heidelberg.In this paper, the velocity-based POD and the vorticity-based POD have been systematically compared in three characteristic regions of the flow downstream of a two-dimensional circular cylinder, namely the near, intermediate and far wakes. The two-point space correlation function is used to determine which of the two methods is better suited for extracting the large-scale flow structures based on the repartition of energy among the different POD modes. It is found that the POD, based on the lateral velocity fluctuation v, leads to the most optimum extraction in all three flow regions, while the vorticity-based POD is only effective in the near and intermediate wakes. Based on two-point space correlation functions, a scenario is proposed for the application of POD to the present two-dimensional wake.

DOI 10.1007/s00348-015-2038-z
Co-authors Robert Antonia
2015 Kamruzzaman M, Djenidi L, Antonia RA, Talluru KM, 'Scale-by-scale energy budget in a turbulent boundary layer over a rough wall', International Journal of Heat and Fluid Flow, (2015) [C1]

Hot-wire velocity measurements are carried out in a turbulent boundary layer over a rough wall consisting of transverse circular rods, with a ratio of 8 between the spacing (w) of... [more]

Hot-wire velocity measurements are carried out in a turbulent boundary layer over a rough wall consisting of transverse circular rods, with a ratio of 8 between the spacing (w) of two consecutive rods and the rod height (k). The pressure distribution around the roughness element is used to accurately measure the mean friction velocity (Ut) and the error in the origin. It is found that Ut remained practically constant in the streamwise direction suggesting that the boundary layer over this surface is evolving in a self-similar manner. This is further corroborated by the similarity observed at all scales of motion, in the region 0.2=y/d=0.6, as reflected in the constancy of Reynolds number (R¿) based on Taylor's microscale and the collapse of Kolmogorov normalized velocity spectra at all wavenumbers.A scale-by-scale budget for the second-order structure function <(du)2> (du=u(x+r)-u(x), where u is the fluctuating streamwise velocity component and r is the longitudinal separation) is carried out to investigate the energy distribution amongst different scales in the boundary layer. It is found that while the small scales are controlled by the viscosity, intermediate scales over which the transfer of energy (or <(du)3>) is important are affected by mechanisms induced by the large-scale inhomogeneities in the flow, such as production, advection and turbulent diffusion. For example, there are non-negligible contributions from the large-scale inhomogeneity to the budget at scales of the order of ¿, the Taylor microscale, in the region of the boundary layer extending from y/d=0.2 to 0.6 (d is the boundary layer thickness).

DOI 10.1016/j.ijheatfluidflow.2015.04.004
Co-authors Robert Antonia
2015 Tang SL, Antonia RA, Djenidi L, Zhou Y, 'Transport equation for the isotropic turbulent energy dissipation rate in the far-wake of a circular cylinder', Journal of Fluid Mechanics, 784 109-129 (2015) [C1]

© 2015 Cambridge University Press.The transport equation for the isotropic turbulent energy dissipation rate along the centreline in the far-wake of a circular cylinder is derive... [more]

© 2015 Cambridge University Press.The transport equation for the isotropic turbulent energy dissipation rate along the centreline in the far-wake of a circular cylinder is derived by applying the limit at small separations to the two-point energy budget equation. It is found that the imbalance between the production and the destruction of eiso, respectively due to vortex stretching and viscosity, is governed by both the streamwise advection and the lateral turbulent diffusion (the former contributes more to the budget than the latter). This imbalance differs intrinsically from that in other flows, e.g. grid turbulence and the flow along the centreline of a fully developed channel, where either the streamwise advection or the lateral turbulent diffusion of eiso governs the imbalance. More importantly, the different types of imbalance represent different constraints on the relation between the skewness of the longitudinal velocity derivative and the destruction coefficient of enstrophy G. This results in a non-universal approach of towards a constant value as the Taylor microscale Reynolds number R¿ increases. For the present flow, the magnitude of S decreases initially before increasing (R¿ > 40) towards this constant value. The constancy of S at large R¿ violates the modified similarity hypothesis introduced by Kolmogorov (J. Fluid Mech., vol. 13, 1962, pp. 82-85) but is consistent with the original similarity hypotheses (Kolmogorov, Dokl. Akad. Nauk SSSR, vol. 30, 1941b, pp. 299-303 (see also 1991 Proc. R. Soc. Lond. A, vol. 434, pp. 9-13)) , and, more importantly, with the almost completely self-preserving nature of the plane far-wake.

DOI 10.1017/jfm.2015.597
Co-authors Robert Antonia
2015 Tang SL, Antonia RA, Djenidi L, Zhou Y, 'Complete self-preservation along the axis of a circular cylinder far wake', Journal of Fluid Mechanics, 786 253-274 (2015) [C1]

© 2015 Cambridge University Press.Self-preservation (SP) analyses are applied to the mean momentum and the scale-by-scale energy budget equations in the far wake of a circular cy... [more]

© 2015 Cambridge University Press.Self-preservation (SP) analyses are applied to the mean momentum and the scale-by-scale energy budget equations in the far wake of a circular cylinder. The scale-by-scale SP analysis, which is a two-point analysis, complements the SP analysis of the mean momentum equation. Power-law variations are derived for different length scales (e.g.the Taylor microscale and the Kolmogorov length scale) and velocity scales (e.g.the root mean square and the Kolmogorov velocity scale). Further, the SP solutions for the scale-by-scale energy budget equation are exploited to develop an exact relation to estimate the mean turbulent kinetic energy dissipation rate on the wake axis. These SP solutions and the new relation are well supported by hot-wire data in the far wake at a Reynolds number of 2000 based on the free stream velocity and the cylinder diameter. On the far-wake axis, both the energy spectra and the structure functions exhibit an almost perfect collapse over all wavenumbers and separations, irrespective of the set of scaling variables used for normalisation. This is consistent with a complete self-preservation (i.e.SP is satisfied at all scales of motion) in the far wake.

DOI 10.1017/jfm.2015.663
Co-authors Robert Antonia
2015 Djenidi L, Antonia RA, 'A general self-preservation analysis for decaying homogeneous isotropic turbulence', Journal of Fluid Mechanics, 773 345-365 (2015) [C1]

© Cambridge University Press 2015.A general framework of self-preservation (SP) is established, based on the transport equation of the second-order longitudinal velocity structur... [more]

© Cambridge University Press 2015.A general framework of self-preservation (SP) is established, based on the transport equation of the second-order longitudinal velocity structure function in decaying homogeneous isotropic turbulence (HIT). The analysis introduces the skewness of the longitudinal velocity increment, S(r, t) (r and t are space increment and time), as an SP controlling parameter. The present SP framework allows a critical appraisal of the specific assumptions that have been made in previous SP analyses. It is shown that SP is achieved when S(r, t) varies in a self-similar manner, i.e. S=c(t)f(r/l) where l is a scaling length, and c(t) and f(r/l) are dimensionless functions of time and (r/l), respectively. When c(t) is constant, l can be identified with the Kolmogorov length scale ¿, even when the Reynolds number is relatively small. On the other hand, the Taylor microscale ¿ is a relevant SP length scale only when certain conditions are met. The decay law for the turbulent kinetic energy (k) ensuing from the present SP is a generalization of the existing laws and can be expressed as k ~ (t-t0)n+B, where B is a constant representing the energy of the motions whose scales are excluded from the SP range of scales. When B = 0, SP is achieved at all scales of motion and ¿ becomes a relevant scaling length together with ¿. The analysis underlines the relation between the initial conditions and the power-law exponent n and also provides a link between them. In particular, an expression relating n to the initial values of the scaling length and velocity is developed. Finally, the present SP analysis is consistent with both experimental grid turbulence data and the eddy-damped quasi-normal Markovian numerical simulation of decaying HIT by Meldi & Sagaut (J. Turbul., vol. 14, 2013, pp. 24-53).

DOI 10.1017/jfm.2015.250
Citations Scopus - 5Web of Science - 1
Co-authors Robert Antonia
2015 Leonardi S, Orlandi P, Djenidi L, Antonia RA, 'Heat transfer in a turbulent channel flow with square bars or circular rods on one wall', Journal of Fluid Mechanics, 776 512-530 (2015) [C1]

© © 2015 Cambridge University PressA.Direct numerical simulations (DNS) are carried out to study the passive heat transport in a turbulent channel flow with either square bars o... [more]

© © 2015 Cambridge University PressA.Direct numerical simulations (DNS) are carried out to study the passive heat transport in a turbulent channel flow with either square bars or circular rods on one wall. Several values of the pitch to height ratio and two Reynolds numbers are considered. The roughness increases the heat transfer by inducing ejections at the leading edge of the roughness elements. The amounts of heat transfer and mixing depend on the separation between the roughness elements, an increase in heat transfer accompanying an increase in drag. The ratio of non-dimensional heat flux to the non-dimensional wall shear stress is higher for circular rods than square bars irrespectively of the pitch to height ratio. The turbulent heat flux varies within the cavities and is larger near the roughness elements. Both momentum and thermal eddy diffusivities increase relative to the smooth wall. For square cavities the turbulent Prandtl number is smaller than for a smooth channel near the wall. As increases, the turbulent Prandtl number increases up to a maximum of 2.5 at the crests plane of the square bars . With increasing distance from the wall, the differences with respect to the smooth wall vanish and at three roughness heights above the crests plane, the turbulent Prandtl number is essentially the same for smooth and rough walls.

DOI 10.1017/jfm.2015.344
Citations Scopus - 1
Co-authors Robert Antonia
2015 Tang SL, Antonia RA, Djenidi L, Abe H, Zhou T, Danaila L, Zhou Y, 'Transport equation for the mean turbulent energy dissipation rate on the centreline of a fully developed channel flow', Journal of Fluid Mechanics, 777 151-177 (2015) [C1]

© 2015 Cambridge University Press.The transport equation for the mean turbulent energy dissipation rate along the centreline of a fully developed channel flow is derived by apply... [more]

© 2015 Cambridge University Press.The transport equation for the mean turbulent energy dissipation rate along the centreline of a fully developed channel flow is derived by applying the limit at small separations to the two-point budget equation. Since the ratio of the isotropic energy dissipation rate to the mean turbulent energy dissipation rate is sufficiently close to 1 on the centreline, our main focus is on the isotropic form of the transport equation. It is found that the imbalance between the production of due to vortex stretching and the destruction of caused by the action of viscosity is governed by the diffusion of by the wall-normal velocity fluctuation. This imbalance is intrinsically different from the advection-driven imbalance in decaying-type flows, such as grid turbulence, jets and wakes. In effect, the different types of imbalance represent different constraints on the relation between the skewness of the longitudinal velocity derivative and the destruction coefficient of enstrophy in different flows, thus resulting in non-universal approaches of towards a constant value as the Taylor microscale Reynolds number, , increases. For example, the approach is slower for the measured values of along either the channel or pipe centreline than along the axis in the self-preserving region of a round jet. The data for collected in different flows strongly suggest that, in each flow, the magnitude of is bounded, the value being slightly larger than 0.5.

DOI 10.1017/jfm.2015.342
Citations Scopus - 2
Co-authors Robert Antonia
2015 Talluru KM, Djenidi L, Kamruzzaman M, Antonia RA, 'Self-preservation in a zero pressure gradient rough-wall turbulent boundary layer', Journal of Fluid Mechanics, 788 57-69 (2015)

© 2015 Cambridge University Press.A self-preservation (SP) analysis is carried out for a zero pressure gradient (ZPG) rough-wall turbulent boundary layer with a view to establish... [more]

© 2015 Cambridge University Press.A self-preservation (SP) analysis is carried out for a zero pressure gradient (ZPG) rough-wall turbulent boundary layer with a view to establishing the requirements of complete SP (i.e. SP across the entire layer) and determining if these are achievable. The analysis shows that SP is achievable in certain rough-wall boundary layers (irrespectively of the Reynolds number Re), when the mean viscous stress is zero or negligible compared to the form drag across the entire boundary layer. In this case, the velocity scale u* must be constant, the length scale l should vary linearly with the streamwise distance x and the roughness height k must be proportional to l. Although this result is consistent with that of Rotta (Prog. Aeronaut. Sci., vol. 2 (1), 1962, pp. 1-95), it is derived in a more rigorous manner than the method employed by Rotta. Further, it is noted that complete SP is not possible in a smooth-wall ZPG turbulent boundary layer. The SP conditions are tested against published experimental data on both a smooth wall (Kulandaivelu, 2012, PhD thesis, The University of Melbourne) and a rough wall, where the roughness height increases linearly with x (Kameda et al., J. Fluid Sci. Technol., vol. 3 (1), 2008, pp. 31-42). Complete SP in a ZPG rough-wall turbulent boundary layer seems indeed possible when k ¿ x.

DOI 10.1017/jfm.2015.665
Co-authors Robert Antonia
2015 Djenidi L, Kamruzzaman M, Antonia RA, 'Power-law exponent in the transition period of decay in grid turbulence', JOURNAL OF FLUID MECHANICS, 779 (2015) [C1]
DOI 10.1017/jfm.2015.428
Citations Scopus - 1
Co-authors Robert Antonia
2015 Kamruzzaman M, Djenidi L, Antonia RA, Talluru KM, 'Drag of a turbulent boundary layer with transverse 2D circular rods on the wall', EXPERIMENTS IN FLUIDS, 56 (2015) [C1]
DOI 10.1007/s00348-015-1995-6
Citations Scopus - 1
Co-authors Robert Antonia
2015 Antonia RA, Tang SL, Djenidi L, Danaila L, 'Boundedness of the velocity derivative skewness in various turbulent flows', Journal of Fluid Mechanics, 781 727-744 (2015) [C1]

© 2015 Cambridge University Press.The variation of S, the velocity derivative skewness, with the Taylor microscale Reynolds number Re¿ is examined for different turbulent flows ... [more]

© 2015 Cambridge University Press.The variation of S, the velocity derivative skewness, with the Taylor microscale Reynolds number Re¿ is examined for different turbulent flows by considering the locally isotropic form of the transport equation for the mean energy dissipation rate e¯iso. In each flow, the equation can be expressed in the form S C 2G=Re¿ D C=Re¿, where G is a non-dimensional rate of destruction of e¯iso and C is a flow-dependent constant. Since 2G=Re¿ is found to be very nearly constant for Re¿ = 70, S should approach a universal constant when Re¿ is sufficiently large, but the way this constant is approached is flow dependent. For example, the approach is slow in grid turbulence and rapid along the axis of a round jet. For all the flows considered, the approach is reasonably well supported by experimental and numerical data. The constancy of S at large Re¿ has obvious ramifications for small-scale turbulence research since it violates the modified similarity hypothesis introduced by Kolmogorov (J. Fluid Mech., vol. 13, 1962, pp. 82-85) but is consistent with the original similarity hypothesis (Kolmogorov, Dokl. Akad. Nauk SSSR, vol. 30, 1941, pp. 299-303).

DOI 10.1017/jfm.2015.539
Citations Scopus - 1
Co-authors Robert Antonia
2014 Thiesset F, Antonia RA, Djenidi L, 'Consequences of self-preservation on the axis of a turbulent round jet', JOURNAL OF FLUID MECHANICS, 748 (2014) [C1]
DOI 10.1017/jfm.2014.235
Citations Scopus - 8Web of Science - 3
Co-authors Robert Antonia
2014 Lee SK, Djenidi L, Antonia RA, 'Empirical correlations for slightly heated decaying passive-grid turbulence', Heat Transfer Engineering, 35 1482-1490 (2014) [C1]

For homogeneous isotropic turbulence approximated by grid turbulence, velocity and temperature fluctuations decay under the effects of viscosity and thermal diffusivity of the flu... [more]

For homogeneous isotropic turbulence approximated by grid turbulence, velocity and temperature fluctuations decay under the effects of viscosity and thermal diffusivity of the fluid. In the self-similar region of grid flow, there is no mean shear and no turbulence production, and the decay rate is well represented by a power law; this is supported by the present measurements in three different grid flows and by previously published data for passive-grid turbulence obtained over different ranges of streamwise distance and/or Reynolds number. The grid flow is slightly heated so that temperature acts as a passive scalar. From dimensional analysis and empirical power-law correlations, relations for basic flow parameters, such as the Kolmogorov, Taylor, and Corrsin microscales, and the Reynolds and Péclet numbers, are established as functions of the normalized streamwise distance downstream of the grid. With these relations, it is possible to determine the flow parameters for a specific passive-grid geometry or, more generally, a specific set of initial conditions. © 2014 Copyright Taylor & Francis Group, LLC.

DOI 10.1080/01457632.2014.889485
Co-authors Robert Antonia
2014 Djenidi L, Antonia RA, Amielh M, Anselmet F, 'Use of PIV to highlight possible errors in hot-wire Reynolds stress data over a 2D rough wall', EXPERIMENTS IN FLUIDS, 55 (2014) [C1]
DOI 10.1007/s00348-014-1830-5
Citations Scopus - 1
Co-authors Robert Antonia
2014 Antonia RA, Djenidi L, Danaila L, 'Collapse of the turbulent dissipative range on Kolmogorov scales', PHYSICS OF FLUIDS, 26 (2014) [C1]
DOI 10.1063/1.4869305
Citations Scopus - 7Web of Science - 3
Co-authors Robert Antonia
2014 Thiesset F, Schaeffer V, Djenidi L, Antonia RA, 'On self-preservation and log-similarity in a slightly heated axisymmetric mixing layer', PHYSICS OF FLUIDS, 26 (2014) [C1]
DOI 10.1063/1.4890994
Citations Scopus - 1
Co-authors Robert Antonia
2014 Djenidi L, Tardu SF, Antonia RA, Danaila L, 'Breakdown of Kolmogorov's first similarity hypothesis in grid turbulence', JOURNAL OF TURBULENCE, 15 596-610 (2014) [C1]
DOI 10.1080/14685248.2014.913848
Citations Scopus - 5Web of Science - 4
Co-authors Robert Antonia
2013 Antonia RA, Lee SK, Djenidi L, Lavoie P, Danaila L, 'Invariants for slightly heated decaying grid turbulence', JOURNAL OF FLUID MECHANICS, 727 379-406 (2013) [C1]
DOI 10.1017/jfm.2013.217
Citations Scopus - 7Web of Science - 7
Co-authors Robert Antonia
2013 Rajagopalan S, Antonia RA, Djenidi L, 'Effect of mesh grids on the turbulent mixing layer of an axisymmetric jet', Heat Transfer Engineering, 34 1216-1225 (2013) [C1]

This article focuses on the effect that two different mesh grids have on the structure of the mixing layer of an axisymmetric jet. Detailed measurements of mean velocity and turbu... [more]

This article focuses on the effect that two different mesh grids have on the structure of the mixing layer of an axisymmetric jet. Detailed measurements of mean velocity and turbulent velocity fluctuations are made with an X hot-wire probe in the range 0.5 = x/d = 10, where x is the longitudinal distance from the nozzle exit plane and d is the nozzle diameter. The grids are introduced at two locations-one location just downstream of the nozzle exit plane and the other location upstream of the nozzle exit plane in order to perturb the nozzle exit boundary layer. One mesh completely covers the nozzle (full mesh or FM) and the other mesh covers the central, high-speed zone (disk mesh or DM). With reference to the undisturbed jet, FM yields a significant reduction in the turbulence intensity and width of the shear layer, whereas DM enhances the turbulence intensity and increases the width of the shear layer. Both grids suppress the formation of the Kelvin-Helmholtz instability in the mixing layer. Results are presented, mainly at x/d = 5 and 6 in both the spectral domain and physical space. In the latter context, second-and third-order structure functions associated with u (the longitudinal velocity fluctuation) and v (the lateral or radial velocity fluctuation) are presented only for the flow perturbed by placing the mesh outside the nozzle. All mesh geometries have a more significant effect on the second-order structure function of u than on that of v. The third-order energy transfer term is affected in such a way that, relative to the undisturbed jet, its peak location is shifted to a smaller scale when FM is used and to a larger scale with DM. This is consistent with our observations that FM reduces the turbulence in the shear layer while DM enhances it. It is suggested that the large-scale vortices that are formed at the edge of the grids play a significant role in the transfer of energy. © 2013 Taylor & Francis Group, LLC.

DOI 10.1080/01457632.2013.776908
Citations Scopus - 1Web of Science - 1
Co-authors Sundara Rajagopalan, Robert Antonia
2013 Djenidi L, Tardu SF, Antonia RA, 'Relationship between temporal and spatial averages in grid turbulence', Journal of Fluid Mechanics, 730 593-606 (2013) [C1]
DOI 10.1017/jfm.2013.351
Citations Scopus - 8Web of Science - 5
Co-authors Robert Antonia
2013 Thiesset F, Antonia RA, Danaila L, Djenidi L, 'Karman-Howarth closure equation on the basis of a universal eddy viscosity', PHYSICAL REVIEW E, 88 (2013) [C1]
DOI 10.1103/PhysRevE.88.011003
Citations Scopus - 3Web of Science - 2
Co-authors Robert Antonia
2013 Kamruzzaman M, Wahiduzzaman M, Alam MM, Djenidi L, 'The effects of magnetic field on the fluid flow through a rotating straight duct with large aspect ratio', Procedia Engineering, 56 239-244 (2013) [C1]

This paper presents a numerical study of an investigation of a fluid flow through a rotating rectangular straight duct in the presence of magnetic field. The straight duct of rect... [more]

This paper presents a numerical study of an investigation of a fluid flow through a rotating rectangular straight duct in the presence of magnetic field. The straight duct of rectangular cross-section rotates at a constant angular velocity about the centre of the duct cross-section is same as the axis of the magnetic field along the positive direction in the stream wise direction of the flows. Numerical calculation is based on the Magneto hydrodynamics incompressible viscous steady fluid model whereas Spectral method is applied as a main tool. Flow depends on the Magnetic parameter, Dean number and Taylor number. One of the interesting phenomena of the fluid flow is the solution curve and the flow structures in case of rotation of the duct axis. The calculation are carried out for 5 = Mg = 50000, 50 = Tr 100000, Dn 500, 1000, 1500 and 2000 where the aspect ratio ¿ 3.0. The maximum axial flow will be shifted to the centre from the wall and turn into the ring shape under the effects of high magnetic parameter and large Taylor number whereas the fluid particles strength is weak. © 2013 The Authors. Published by Elsevier Ltd.

DOI 10.1016/j.proeng.2013.03.113
2012 Djenidi L, Tardu SF, 'On the anisotropy of a low-Reynolds-number grid turbulence', Journal of Fluid Mechanics, 702 332-353 (2012) [C1]
Citations Scopus - 7Web of Science - 7
2012 Djenidi L, Antonia RA, 'A spectral chart method for estimating the mean turbulent kinetic energy dissipation rate', Experiments in Fluids, 53 1005-1013 (2012) [C1]
Citations Scopus - 9Web of Science - 3
Co-authors Robert Antonia
2012 Lee S-K, Benaissa A, Djenidi L, Lavoie P, Antonia RA, 'Decay of passive-scalar fluctuations in slightly stretched grid turbulence', Experiments in Fluids, 53 909-923 (2012) [C1]
Citations Scopus - 5Web of Science - 3
Co-authors Robert Antonia
2012 Lee SK, Benaissa A, Djenidi L, Lavoie P, Antonia RA, 'Scaling range of velocity and passive scalar spectra in grid turbulence (vol 24, 075101, 2012)', PHYSICS OF FLUIDS, 24 (2012) [C3]
DOI 10.1063/1.4745889
Co-authors Robert Antonia
2012 Lee S-K, Benaissa A, Djenidi L, Lavoie P, Antonia RA, 'Scaling range of velocity and passive scalar spectra in grid turbulence', Physics of Fluids, 24 075101 (2012) [C1]
Citations Scopus - 9Web of Science - 8
Co-authors Robert Antonia
2011 Lefeuvre N, Djenidi L, Tardu S, 'Momentum and scalar transport in a localised synthetic turbulence in a channel flow with a short contraction', Journal of Physics: Conference Series, 318 052047 (2011) [C1]
2010 Djenidi L, Antonia R, Amielh M, Anselmet F, 'POD analysis of the near-wall region of a rough wall turbulent boundary layer', IUTAM Bookseries, 22 49-54 (2010)

A proper orthogonal decomposition (POD) analysis is carried out with particle image velocity (PIV) measurements of a turbulent boundary layer over a rough wall made of transverse ... [more]

A proper orthogonal decomposition (POD) analysis is carried out with particle image velocity (PIV) measurements of a turbulent boundary layer over a rough wall made of transverse square bars. Two bar spacings were investigated (w/k = 3 and 7, w is the bar spacing and k the bar diameter). This ratio affects the energy distribution amongst the POD modes throughout the boundary layer, the higher modes, i.e. the relatively small-scale and less energetic motions, being the most perturbed. The first few near-wall POD modes were also affected by the spacing. © Springer Science+Business Media B.V. 2010.

DOI 10.1007/978-90-481-9631-9-7
2010 Agrawal A, Djenidi L, Antonia RA, 'Near-field measurements and development of a new boundary layer over a flat plate with localized suction', Experiments in Fluids, 48 747-762 (2010) [C1]
DOI 10.1007/s00348-009-0766-7
Citations Scopus - 2Web of Science - 2
Co-authors Robert Antonia
2010 Antonia RA, Lavoie P, Djenidi L, Benaissa A, 'Effect of a small axisymmetric contraction on grid turbulence', Experiments in Fluids, 49 3-10 (2010) [C1]
DOI 10.1007/s00348-009-0704-8
Citations Scopus - 9Web of Science - 7
Co-authors Robert Antonia
2009 Djenidi L, Antonia RA, 'Momentum and heat transport in a three-dimensional transitional wake of a heated square cylinder', Journal of Fluid Mechanics, 640 109-129 (2009) [C1]
DOI 10.1017/s0022112009991285
Citations Scopus - 10Web of Science - 8
Co-authors Robert Antonia
2009 Agrawal A, Djenidi L, Agrawal A, 'Simulation of gas flow in microchannels with a single 90 degrees bend', Computers & Fluids, 38 1629-1637 (2009) [C1]
DOI 10.1016/j.compfluid.2009.01.004
Citations Scopus - 14Web of Science - 13
2009 Djenidi L, Agrawal A, Antonia RA, 'Anisotropy measurements in the boundary layer over a flat plate with suction', Experimental Thermal and Fluid Science, 33 1106-1111 (2009) [C1]
DOI 10.1016/j.expthermflusci.2009.06.006
Citations Scopus - 1Web of Science - 1
Co-authors Robert Antonia
2008 Djenidi L, 'Structure of a turbulent crossbar near-wake studied by means of lattice Boltzmann simulation', Physical Review E, 77 (2008) [C1]
DOI 10.1103/physreve.77.036310
Citations Scopus - 11Web of Science - 9
2008 Oyewola O, Djenidi L, Antonia RA, 'Response of mean turbulent energy dissipation rate and spectra to concentrated wall suction', Experiments in Fluids, 44 159-165 (2008) [C1]
DOI 10.1007/s00348-007-0386-z
Citations Scopus - 1
Co-authors Robert Antonia
2008 Djenidi L, Antonia RA, Amielh M, Anselmet F, 'A turbulent boundary layer over a two-dimensional rough wall', Experiments in Fluids, 44 37-47 (2008) [C1]
DOI 10.1007/s00348-007-0372-5
Citations Scopus - 37Web of Science - 26
Co-authors Robert Antonia
2007 Oyewola O, Djenidi L, Antonia RA, 'Influence of localised double suction on a turbulent boundary layer', Journal of Fluids and Structures, 23 787-798 (2007) [C1]
DOI 10.1016/j.jfluidstructs.2006.11.006
Citations Scopus - 4Web of Science - 1
Co-authors Robert Antonia
2007 Oyewola MO, Djenidi L, Antonia RA, 'Examination of anisotropy of the small-scale motion in a perturbed low Reynolds number turbulent boundary layer', Experimental Thermal and Fluid Science, 32 309-315 (2007) [C1]
DOI 10.1016/j.expthermflusci.2007.04.004
Citations Scopus - 1Web of Science - 1
Co-authors Robert Antonia
2007 Benaissa A, Djenidi L, Antonia RA, Parker R, 'Effect of initial conditions on the scalar decay in grid turbulence at low R ¿', Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC, 914-918 (2007)

Decaying grid turbulence is considered at low Reynolds number (R ¿~ 50) for different initial conditions. Three different grid geometries are used. Heat is injected via a mandoli... [more]

Decaying grid turbulence is considered at low Reynolds number (R ¿~ 50) for different initial conditions. Three different grid geometries are used. Heat is injected via a mandoline at a distance of 1.5 M from the grid. The amount of heating is such that temperature may be treated as a passive scalar. A small contraction (1.36:1) is added at a distance of 11M downstream of the grid. The power-law exponents for the scalar variance are compared with those for the turbulent kinetic energy. These exponents depend on the grid geometry. For the isotropic dissipation rate (Chi;) iso, the power-law exponent agrees with that inferred from the temperature variance transport equation. Restricting the range of validity of the decay law affects the magnitudes of the origin and decay exponent. Secondorder temperature structure functions collapse when the normalization is based on the local temperature variance and the Corrsin microscale but the asymptotic form of this collapse depends on the initial conditions.

Citations Scopus - 2
Co-authors Robert Antonia
2007 Lavoie PLD, Djenidi L, Antonia RA, 'Effects of initial conditions in decaying turbulence generated by passive grids', Journal of Fluid Mechanics, 585 395-420 (2007) [C1]
DOI 10.1017/s0022112007006763
Citations Scopus - 67Web of Science - 56
Co-authors Robert Antonia
2006 Djenidi L, 'Lattice-Boltzmann simulation of grid-generated turbulence', Journal of Fluid Mechanics, 552 13-35 (2006) [C1]
DOI 10.1017/S002211200600869X
Citations Scopus - 34Web of Science - 34
2006 Djenidi L, Moghtaderi B, 'Numerical investigation of laminar mixing in a coaxial microreactor', Journal of Fluid Mechanics, 568 223-242 (2006) [C1]
DOI 10.1017/S0022112006002035
Citations Scopus - 6Web of Science - 4
Co-authors Behdad Moghtaderi
2006 Moghtaderi B, Shames I, Djenidi L, 'Microfluidic characteristics of a multi-holed baffle plate micro-reactor', International Journal of Heat and Fluid Flow, 27 1069-1077 (2006) [C1]
DOI 10.1016/j.ijheatfluidflow.2006.01.008
Citations Web of Science - 6
Co-authors Behdad Moghtaderi
2006 Agrawal A, Djenidi L, Antonia RA, 'Investigation of flow around a pair of side-by-side square cylinders using the lattice Boltzmann method', Computers and Fluids, 35 1093-1107 (2006) [C1]
DOI 10.1016/j.compfluid.2005.05.008
Citations Scopus - 59Web of Science - 45
Co-authors Robert Antonia
2006 Leonardi S, Orlandi P, Djenidi L, Antonia RA, 'Guidelines for modeling a 2D rough wall channel flow', Flow Turbulence and Combustion, 77 41-57 (2006) [C1]
DOI 10.1007/s10494-006-9036-4
Citations Web of Science - 4
Co-authors Robert Antonia
2006 Burattini P, Lavoie PLD, Agrawal A, Djenidi L, Antonia RA, 'Power law of decaying homogeneous isotropic turbulence at low Reynolds number', Physical Review E, 73 (2006) [C1]
DOI 10.1103/PhysRevE.73.066304
Citations Scopus - 28Web of Science - 25
Co-authors Robert Antonia
2005 Oyewola O, Djenidi L, Antonia RA, 'Spanwise vorticity measurements in a perturbed boundary layer', Experiments in Fluids, 39 152-155 (2005) [C1]
DOI 10.1007/s00348-005-0993-5
Citations Scopus - 1Web of Science - 1
Co-authors Robert Antonia
2005 Lavoie PLD, Burattini P, Djenidi L, Antonia RA, 'Effect of initial conditions on decaying grid turbulence at low R-gimel', Experiments in Fluids, 39 865-874 (2005) [C1]
DOI 10.1007/s00348-005-0022-8
Citations Scopus - 27Web of Science - 24
Co-authors Robert Antonia
2005 Agrawal A, Djenidi L, Antonia RA, 'Simulation of gas flow in microchannels with a sudden expansion or contraction', Journal of Fluid Mechanics, 530 135-144 (2005) [C1]
DOI 10.1017/S0022112005003691
Citations Scopus - 42Web of Science - 40
Co-authors Robert Antonia
2004 Oyewola O, Djenidi L, Antonia RA, 'The response of a turbulent boundary layer to concentrated suction applied through a pair of porous wall strips', Journal of Fluids Engineereing, 126 888-890 (2004) [C1]
DOI 10.1115/1.1792273
Citations Scopus - 3Web of Science - 3
Co-authors Robert Antonia
2004 Leonardi S, Orlandi P, Djenidi L, Antonia RA, 'Structure of turbulent channel flow with square bars on one wall', International Journal of Heat and Fluid Flow, 25 384-392 (2004) [C1]
DOI 10.1016/j.ijheatfluidflow.2004.02.022
Citations Scopus - 55Web of Science - 52
Co-authors Robert Antonia
2004 Oyewola O, Djenidi L, Antonia RA, 'Influence of localised wall suction on the anisotropy of the Reynolds stress tensor in a turbulent boundary layer', Experiments in Fluids, 37 187-193 (2004) [C1]
DOI 10.1007/s00348-004-0800-8
Citations Scopus - 20Web of Science - 14
Co-authors Robert Antonia
2004 Agrawal A, Djenidi L, Antonia RA, 'LIF based detection of low-speed streaks', experiments in fluids, 36 600-603 (2004) [C1]
DOI 10.1007/s00348-003-0732-8
Citations Scopus - 2Web of Science - 2
Co-authors Robert Antonia
2004 Burattini P, Djenidi L, 'Velocity and passive scalar characteristics in a round jet with grids at the nozzle exit', Flow, Turbulence and Combustion, 72 199-218 (2004) [C1]
DOI 10.1023/B:APPL.0000044412.79451.64
Citations Scopus - 18Web of Science - 12
2003 Djenidi L, Antonia RA, Savill AM, 'A numerical study of drag reduction by mini-belts in a smooth wall turbulent boundary layer', The Aeronautical Journal, Paper No.2728 (2003) [C1]
Co-authors Robert Antonia
2003 Leonardi S, Orlandi P, Smalley RJ, Djenidi L, Antonia RA, 'Direct numerical simulations of turbulent channel flow with transverse square bars on one wall', Journal of Fluid Mechanics, 491 229-238 (2003) [C1]
DOI 10.1017/S0022112003005500
Citations Scopus - 183Web of Science - 140
Co-authors Robert Antonia
2003 Oyewola O, Djenidi L, Antonia RA, 'Combined influence of the Reynolds number and localised wall suction on a turbulent boundary layer', Experiments in Fluids, 35 199-206 (2003) [C1]
DOI 10.1007/s00348-003-0658-1
Citations Scopus - 20Web of Science - 13
Co-authors Robert Antonia
2002 Smalley RJ, Leonardi S, Antonia RA, Djenidi L, Orlandi P, 'Reynolds stress anistropy of turbulent rough wall layers', Experiments in Fluids, 33 31-37 (2002) [C1]
Citations Scopus - 38Web of Science - 31
Co-authors Robert Antonia
2001 Djenidi L, Antonia RA, 'Calculation of the effect of concentrated wall suction on a turbulent boundary layer using a second-order moment closure', International Journal of Heat and Fluid Flow, 22 487-494 (2001) [C1]
Citations Scopus - 8Web of Science - 9
Co-authors Robert Antonia
2001 Rehab H, Antonia RA, Djenidi L, 'Steamwise evloution of a high-Schmidt-number passive scalar in a turbulent plane wake', Experiments in Fluids, 31 186-192 (2001) [C1]
Citations Scopus - 8Web of Science - 7
Co-authors Robert Antonia
2001 Smalley RJ, Antonia RA, Djenidi L, 'Self-preservation of rough-wall turbulent boundary layers', European Journal of Mechanics B-Fluids, 20 591-602 (2001) [C1]
Citations Scopus - 26Web of Science - 18
Co-authors Robert Antonia
2000 Rehab H, Antonia RA, Djenidi L, Mi J, 'Characteristics of fluorescein dye and temperature fluctuations in a turbulent near-wake', Experiments in Fluids, 28 462-470 (2000) [C1]
Citations Scopus - 5Web of Science - 6
Co-authors Robert Antonia
1999 Djenidi L, Elavarasan R, Antonia RA, 'The Turbulent Boundary Layer Over Transverse Square Cavities', Journal of Fluid Mechanics, 395 271-294 (1999) [C1]
Citations Scopus - 94Web of Science - 76
Co-authors Robert Antonia
1998 Djenidi L, Antonia RA, Hundseid J, Krogstad PA, 'Combined Effect of Wall Suction and Riblets on a Low R Turbulent Boundary Layer', The Aeronautical Journal, 102 53-57 (1998) [C1]
Citations Scopus - 1Web of Science - 1
Co-authors Robert Antonia
1997 Antonia RA, Djenidi L, 'Reynolds stress producing motions in smooth and rough wall boundary layers', Advances in Fluid Mechanics, 15 181-199 (1997)

Motions that are responsible for the production and maintenance of the Reynolds shear stress in a turbulent boundary layer may be affected by the Reynolds number and the surface r... [more]

Motions that are responsible for the production and maintenance of the Reynolds shear stress in a turbulent boundary layer may be affected by the Reynolds number and the surface roughness. Evidence for each of these effects is presented, based mainly on experiments carried out in our laboratory. The effects are felt in both inner and outer regions of the layer. The evidence points to the non-universality of the active motion and to the sensitivity of the large scale motion to boundary conditions.

Citations Scopus - 4
Co-authors Robert Antonia
1997 Djenidi L, Antonia RA, 'Modeling of the Reynolds stress transport equation', AIAA JOURNAL, 35 450-455 (1997)
DOI 10.2514/2.150
Citations Scopus - 8Web of Science - 7
Co-authors Robert Antonia
1997 Dubief Y, Djenidi L, Antonia RA, 'The measurement of partial derivative u/partial derivative y in a turbulent boundary layer over a riblet surface', INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 18 183-187 (1997)
DOI 10.1016/S0142-727X(96)00091-4
Citations Web of Science - 3
Co-authors Robert Antonia
1997 Dubief Y, Djenidi L, Antonia RA, 'The measurement of ¿u/¿y in a turbulent boundary layer over a riblet surface', International Journal of Heat and Fluid Flow, 18 183-187 (1997)

Statistics of ¿u/¿y have been measured in a turbulent boundary layer over either a smooth wall or a riblet surface using parallel hot wires. Over the riblets, the mean square va... [more]

Statistics of ¿u/¿y have been measured in a turbulent boundary layer over either a smooth wall or a riblet surface using parallel hot wires. Over the riblets, the mean square value of ¿u/¿y (normalised with smooth wall variables) is smaller than over the smooth wall; the difference increases as the distance to the wall decreases. Also this difference is larger when the riblets operate in a drag-augmenting mode. These changes would reflect changes in the near-wall turbulence structure. Furthermore, on the basis that ¿u/¿y is a major contributor to the spanwise vorticity, the results indicate that, relative to the smooth wall, the mean square spanwise vorticity is reduced near a riblet surface. © 1997 by Elsevier Science Inc.

Citations Scopus - 4
Co-authors Robert Antonia
1997 Djenidi L, Dubief Y, Antonia RA, 'Advantages of using a power law in a low R(theta) turbulent boundary layer', EXPERIMENTS IN FLUIDS, 22 348-350 (1997)
DOI 10.1007/s003480050058
Citations Scopus - 12Web of Science - 13
Co-authors Robert Antonia
1996 Djenidi L, Antonia RA, 'Laser Doppler anemometer measurements of turbulent boundary layer over a riblet surface', AIAA JOURNAL, 34 1007-1012 (1996)
DOI 10.2514/3.13180
Citations Scopus - 10Web of Science - 6
Co-authors Robert Antonia
1995 CHING CY, DJENIDI L, ANTONIA RA, 'LOW-REYNOLDS-NUMBER EFFECTS IN A TURBULENT BOUNDARY-LAYER', EXPERIMENTS IN FLUIDS, 19 61-68 (1995)
Citations Scopus - 44Web of Science - 39
Co-authors Robert Antonia
1994 DJENIDI L, ANSELMET F, ANTONIA RA, 'LDA MEASUREMENTS IN A TURBULENT BOUNDARY-LAYER OVER A D-TYPE ROUGH WALL', EXPERIMENTS IN FLUIDS, 16 323-329 (1994)
Citations Scopus - 24Web of Science - 21
Co-authors Robert Antonia
1994 ANTONIA RA, DJENIDI L, SPALART PR, 'ANISOTROPY OF THE DISPERSION TENSOR IN A TURBULENT BOUNDARY-LAYER', PHYSICS OF FLUIDS, 6 2475-2479 (1994)
DOI 10.1063/1.868195
Citations Scopus - 15Web of Science - 16
Co-authors Robert Antonia
1994 Djenidi L, Anselmet F, Liandrat J, Fulachier L, 'Laminar boundary layer over riblets', Physics of Fluids, 6 2993-2999 (1994)

Laser doppler anemometry (LDA) measurements and numerical calculations have been made for a laminar boundary layer on triangular riblets. Calculated mean velocity distributions al... [more]

Laser doppler anemometry (LDA) measurements and numerical calculations have been made for a laminar boundary layer on triangular riblets. Calculated mean velocity distributions along the riblet contour are in good agreement with the measured ones. The results show that no transversal motion exists above and within the riblet valleys (e.g., no secondary motion). It is found that despite the large wetted area increase, the frictional drag is not increased on riblets relative to a smooth wall. This result suggests that the viscous effects are at play in the drag reduction for a turbulent boundary layer, in the sense that they compensate for the increase in wetted area. © 1994 American Institute of Physics.

Citations Scopus - 11
1993 DJENIDI L, ANTONIA RA, 'LDA MEASUREMENTS IN LOW REYNOLDS-NUMBER TURBULENT BOUNDARY-LAYER', EXPERIMENTS IN FLUIDS, 14 280-288 (1993)
Citations Scopus - 27Web of Science - 24
Co-authors Robert Antonia
Show 74 more journal articles

Conference (51 outputs)

Year Citation Altmetrics Link
2015 Djenidi L, 'The Lattice Boltzmann Method and the Problem of Turbulence', PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2014 (ICNAAM-2014) (2015) [E1]
DOI 10.1063/1.4912320
2014 Kamruzzaman M, Talluru KM, Djenidi L, Antonia RA, 'An experimental study of turbulent boundary layer over 2D transverse circular bars', Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014 (2014)

In this paper, we present the results from a turbulent boundary layer developing over a rough surface. The surface consists of transverse cylindrical rods (k, the rod diameter) th... [more]

In this paper, we present the results from a turbulent boundary layer developing over a rough surface. The surface consists of transverse cylindrical rods (k, the rod diameter) that are periodically arranged in the streamwise direction with a spacing of ¿/k = 8 (¿ is the distance between two adjacent roughness elements), that results in maximum form drag. Particular attention is paid to the measurement of the friction velocity (Ut) that plays a major role in the assessment of the roughness effects on the flow. Hot-wire anemometry is used to measure the mean and fluctuating velocity components and pressure tap measurements are carried out to obtain the drag. Two methods are used to determine Ut. One is based on the momentum integral equation. The second relies on measuring the pressure distribution around one roughness element. Results show that both methods give consistent values for Ut to within 3%. Further, the drag coefficient (CD) is observed to be independent of the Reynolds number.

Co-authors Robert Antonia
2014 Saridakis IJ, Lau TCW, Djenidi L, Nathan GJ, 'Monte Carlo simulations of a median-filter technique to discriminate between particle and fluid velocity fields', Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014 (2014)

An error analysis is reported of a method to discriminate between the tracer particles used to mark the carrier-phase and the suspended particles in a two-phase flow for particle ... [more]

An error analysis is reported of a method to discriminate between the tracer particles used to mark the carrier-phase and the suspended particles in a two-phase flow for particle image velocimetry. The discrimination was obtained through application of a median-filter to two-phase image pairs, generated artificially by a Monte Carlo simulation. A Lamb-Oseen vortex was selected as the simulated flow for both the gas- and solid-phases, as it provides a range of velocities within the simulated field. The rotational velocities of both phases were selected to be different, allowing a range of slip velocities to be analysed. Simulations were executed with a range of particle and tracer volumetric loadings, particle sizes and filter widths. This analysis provides much more detail than was previously available on the conditions for which a median filter will accurately discriminate between tracers and larger particles in a real flow.

2014 Tang SL, Djenidi L, Antonia RA, Zhou Y, 'POD analyses of PIV and hot wire velocity data in a cylinder wake', Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014 (2014)

The Proper Orthogonal Decomposition (POD) method has become a well-established tool used for identifying coherent structures since first introduced by Lumley [1]. In the present p... [more]

The Proper Orthogonal Decomposition (POD) method has become a well-established tool used for identifying coherent structures since first introduced by Lumley [1]. In the present paper, we will compare two PODs in a cylinder wake. One is carried out on Particle Image Velocimetry (PIV) data (hereafter denoted PODPIV) and the other is performed on single hot-wire measurements (hereafter denoted PODHW). It is revealed that both PODs capture well the large scale corresponding to the Karman vortex shedding. The results suggest that PODHW provides a less unambiguous and more objective identification of smaller scales than PODPIV. It is also found that the PODHW energy distribution, when adequately normalized, collapses well with the 1D velocity spectrum.

Co-authors Robert Antonia
2014 Lefeuvre N, Djenidi L, Antonia RA, Zhou T, 'Turbulent kinetic energy and temperature variance budgets in the far wake generated by a circular cylinder', Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014 (2014)

Measurements of velocity and the temperature fluctuations have been performed to determine the budget of q2¯ (mean turbulence kinetic energy) and ¿2¯ (temperature variance) in ... [more]

Measurements of velocity and the temperature fluctuations have been performed to determine the budget of q2¯ (mean turbulence kinetic energy) and ¿2¯ (temperature variance) in the far wake of a cylinder. The two budgets show similar physical phenomena (advection and diffusion) as the source of large scale inhomogeneity on the flow centreline. It was noted that the estimates of the dissipation rates e¯ and ¿¯ of q2¯ and ¿2¯, respectively, obtained using a spectral chart method results in a better closure in both the q2¯ and ¿2¯ budgets than their isotropic counterparts.

Co-authors Robert Antonia
2014 Kamruzzaman M, Djenidi L, Antonia RA, 'Effects of low Reynolds number on decay exponent in grid turbulence', Procedia Engineering (2014) [E1]

© 2014 The Authors. Published by Elsevier Ltd.This present work is to investigate on the decay exponent (n) of decay power law (q' <sup>2</sup>~(t - To)n , q'<sup>2</sup> is the ... [more]

© 2014 The Authors. Published by Elsevier Ltd.This present work is to investigate on the decay exponent (n) of decay power law (q' 2~(t - To)n , q'2 is the total turbulent kinetic energy, t is the decay time, t0 is the virtual origin) at low Reynolds numbers based on Taylor microscale R¿(= u '¿/ v) = 64 . Hot wire measurements are carried out in a grid turbulence subjected to a 1.36:1 contraction. The grid consists in large square holes (mesh size 43.75 mm and solidity 43%); small square holes (mesh size 14.15mm and solidity 43%) and woven mesh grid (mesh size 5mm and solidity 36%). The decay exponent (n) is determined using three different methods: (i) decay of q'2, (ii) transport equation for s , the mean dissipation of the turbulent kinetic energy and (iii) ¿ method (Taylor microscale ¿ = v5( q2)/ (ed)} , angular bracket denotes the ensemble). Preliminary results indicate that the magnitude n increases while R¿ (= u'¿/v)decreases, in accordance with the turbulence theory.

DOI 10.1016/j.proeng.2014.11.857
Citations Scopus - 1
Co-authors Robert Antonia
2013 Lee SK, Djenidi L, Antonia RA, Danaila L, 'On the destruction coefficients for slightly heated decaying grid turbulence', International Journal of Heat and Fluid Flow (2013) [E1]
DOI 10.1016/j.ijheatfluidflow.2013.03.009
Citations Scopus - 6Web of Science - 3
Co-authors Robert Antonia
2012 Lee SK, Djenidi L, Antonia RA, 'Spectral method for determining mean dissipation rates of turbulent kinetic energy and passive scalar variance', Proceedings of the 18th Australasian Fluid Mechanics Conference, AFMC 2012 (2012)

Mean dissipation rates <e> and <¿> of the turbulent kinetic energy and of a passive scalar are important in the theory and modelling of turbulent mixing. In reality, turbulence i... [more]

Mean dissipation rates and <¿> of the turbulent kinetic energy and of a passive scalar are important in the theory and modelling of turbulent mixing. In reality, turbulence is usually not isotropic. Twelve velocity derivatives and three scalar derivatives are required to compute these quantities, and so the estimate of the dissipation rates presents a real challenge. We overcome this by developing a spectral method that is tenable for a wide range of Taylor microscale Reynolds numbers provided the small scales are not adversely affected by flow inhomogeneities. The method applies to turbulent mixing for a Prandtl number close to unity and excludes near-wall turbulence. It involves juxtaposing a series of calibrated reference spectra at increments of ¿ and ¿<¿> to the measured spectra to identify the best match. The technique is demonstrated by applying it to previously published grid turbulence data.

Co-authors Robert Antonia
2011 Lee S-K, Djenidi L, Antonia RA, Rajagopalan SR, 'Spectrum of a passive scalar in stretched grid turbulence at low Reynolds numbers', Journal of Physics: Conference Series (2011) [E1]
DOI 10.1088/1742-6596/318/5/052046
Co-authors Sundara Rajagopalan, Robert Antonia
2010 Djenidi L, Antonia R, Amielh M, Anselmet F, 'POD Analysis of the Near-Wall Region of a Rough Wall Turbulent Boundary Layer', IUTAM SYMPOSIUM ON THE PHYSICS OF WALL-BOUNDED TURBULENT FLOWS ON ROUGH WALLS (2010) [E1]
DOI 10.1007/978-90-481-9631-9_7
2010 Lee SK, Djenidi L, Antonia RA, 'Decay of a passive scalar in stretched grid turbulence', 17th Australasian Fluid Mechanics Conference 2010 (2010) [E1]
Citations Scopus - 1
Co-authors Robert Antonia
2010 Antonia RA, Djenidi L, 'On the outer layer controversy for a turbulent layer over a rough wall', Proceedings of the IUTAM Symposium on The Physics of Wall-Bounded Turbulent Flows on Rough Walls (2010) [E1]
DOI 10.1007/978-90-481-9631-9_11
Citations Scopus - 4Web of Science - 2
Co-authors Robert Antonia
2009 Ali MA, Djenidi L, 'Lattice Boltzmann simulation of pulsed jet in T-shaped micromixer', IUTAM Symposium on Advances in Micro- and Nanofluidics: Proceedings of the IUTAM Symposium on Advances in Micro- and Nanofluidics (2009) [E1]
DOI 10.1007/978-90-481-2626-2
2008 Djenidi L, 'Validation of the Lattice Boltzmann method with LDV and PIV measurements', 14th International Symposium on Applications of Laser Techniques to Fluid Mechanics. Book of Abstracts (2008) [E2]
2007 Benaissa A, Djenidi L, Antonia RA, Parker R, 'Effect of initial conditions on the scalar decay in grid turbulence at low R1', 16th AFMC. Proceedings of the 16th Australasian Fluid Mechanics Conference (2007) [E1]
Co-authors Robert Antonia
2007 Djenidi L, Lavoie PLD, 'Near-wake decaying turbulence behind a cross-bar', Advances in Turbulence X1: Proceedings of the 11th EUROMECH European Turbulence Conference (2007) [E2]
2006 Djenidi L, Antonia RA, Amielh M, Anselmet F, 'Near wall organization of a turbulent boundary layer over a two-dimensional rough wall', 13th International Symposium Lisbon on Applications of Laser Techniques to Fluid Mechanics CD-Rom (2006) [E1]
Co-authors Robert Antonia
2006 Moghtaderi B, Djenidi L, 'Mixing Behaviour in a Novel Micro-Reactor', Australian Workshop on Fluid Mechanics (2006) [E3]
Co-authors Behdad Moghtaderi
2006 Ali MA, Djenidi L, Moghtaderi B, 'Lattice Boltzmann Simulation of synthetic Jet in T-Shaped Micromixer', Australian Workshop on Fluid Mechanics (2006) [E3]
Co-authors Behdad Moghtaderi
2006 Lavoie PLD, Djenidi L, Antonia RA, 'Effect of Initial Conditions on the Generation of Coherent Structures in Grid Turbulence', Book of Extended Abstracts Whither Turbulence Prediction and Control (2006) [E3]
Co-authors Robert Antonia
2006 Djenidi L, Lavoie PLD, Burattini P, 'Lattice Boltzmann Simulation of a Cross-Bar Wake', Book of Extended Abstracts Whither Turbulence Prediction and Control (2006) [E3]
2006 Burattini P, Djenidi L, Antonia RA, 'Effect of a Passive Disturbance on the Heat Transport in the Near Field of a Round Jet', Proceedings 13th International Heat Transfer Conference (2006) [E1]
Co-authors Robert Antonia
2005 Djenidi L, Leonardi S, Orlandi P, Antonia RA, 'Effect of a 2-D rough wall on the anisotropy of a turbulent channel flow', Engineering Turbulence Modelling and Experiments 6 (2005) [E1]
Co-authors Robert Antonia
2005 Lavoie PLD, Antonia RA, Djenidi L, 'Use of Energy Scale Budget to Quantify Effect of Initial Conditions on Decaying Grid Turbulence', Proceedings of 20th Canadian Congress of Applied Mechanics (2005) [E3]
Co-authors Robert Antonia
2005 Moghtaderi B, Shames I, Djenidi L, 'Application of Micro-PIV Technique in Examining the Mixing Behaviour in a Novel Micro-Reactor', Proceedings of the 4th Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion (2005) [E1]
Co-authors Behdad Moghtaderi
2005 Agrawal A, Djenidi L, Antonia RA, 'Measurements Over a Flat Plate With and Without Suction', Progress in Turbulence (2005) [E1]
Co-authors Robert Antonia
2005 Agrawal A, Burattini P, Djenidi L, Antonia RA, 'Interaction Between Wakes Shed by Two Side-by-Side Square Cylinders', 35th AIAA Fluid Dynamics Conference and Exhibit Proceedings (2005) [E1]
Co-authors Robert Antonia
2004 Agrawal A, Djenidi L, Antonia RA, 'Evolution of the anisotropy over a flat plate with suction', 12th International Symposium on Application of Laser Techniques to Fluid Mechanics (2004) [E2]
Co-authors Robert Antonia
2004 Oyewola O, Djenidi L, Antonia RA, 'The effect of double suction on the turbulence structure', Proceedings Tenth Asian Congress of Fluid Mechanics (2004) [E1]
Co-authors Robert Antonia
2004 Oyewola O, Djenidi L, Burattini P, Antonia RA, 'Effect of localised wall suction on the small-scale motion in a turbulent boundary layer', Proceedings of the Fifteenth Australasian Fluid Mechanics Conference (2004) [E1]
Co-authors Robert Antonia
2004 Lavoie PLD, Antonia RA, Djenidi L, 'Effect of grid geometry on the scale-by-scale budget of decaying grid turbulence', Proceedings of the Fifteenth Australasian Fluid Mechanics Conference (2004) [E1]
Co-authors Robert Antonia
2003 Leonardi S, Orlandi P, Djenidi L, Antonia RA, 'Structure of Turbulent Channel Flow with Square bars on One Wall', Third International Symposium on Turbulence and Shear Flow Phenomena (2003) [E2]
Co-authors Robert Antonia
2003 Oyewola O, Djenidi L, Antonia RA, 'Effect of Suction Applied through a Pair of Porous Wall Strips, on a Turbulent Boundary Layer', Third International Symposium on Turbulence and Shear Flow Phenomena (2003) [E2]
Co-authors Robert Antonia
2002 Djenidi L, Gall P, Vincent A, Antonia RA, 'Effect of Wall Suction on the Structure of a Turbulent Boundary Layer', Applications of Laser Techniques to Fluid Mechanics (2002) [E2]
Citations Scopus - 10Web of Science - 9
Co-authors Robert Antonia
2002 Djenidi L, Savill A, Antonia RA, 'Calculation of a low-shear turbulent boundary layer using a second-moment order closure', Engineering Turbulence Modelling and Experiments 5 (2002) [E1]
Co-authors Robert Antonia
2002 Leonardi S, Orlandi P, Djenidi L, Antonia RA, 'DNS of a turbulent channel flow with different rough walls', Advances in Turbulence IX (2002) [E2]
Co-authors Robert Antonia
2001 Oyewola O, Djenidi L, Antonia RA, 'Effect on Wall Suctin on a Turbulent Boundary Layer: Reynolds Number Dependence', Proceedings of the Fourteenth Australasian Fluid Mechanics Conference Volume I (2001) [E1]
Co-authors Robert Antonia
2001 Djenidi L, Antonia RA, 'Modelling of the Effect of Concentrated Wall Suction on a Turbulent Boundary Layer Using a Second-Order Moment Closure', Proceedings of the Fourteenth Australasian Fluid Mechanics Conference Volume I (2001) [E1]
Co-authors Robert Antonia
2001 Bisceglia S, Smalley RJ, Djenidi L, Antonia RA, 'Structure of Rough Wall Turbulent Boundary Layers at Relatively High Reynolds Number', Proceedings of the Fourteenth Australasian Fluid Mechanics Conference Volume I (2001) [E1]
Co-authors Robert Antonia
2000 Rehab H, Antonia RA, Djenidi L, 'Statistics of a high schmidt number passive scalar in the far-wake', Proceedings of the Eighth European Turbulence Conference (2000) [E1]
Co-authors Robert Antonia
2000 Rehab H, Djenidi L, Antonia RA, 'Evolution of the pdf of a high Schmidt number passive scalar ina plane wake', Tenth International Symposium on Applications of Laser Techniques to Fluid Mechanics (2000) [E1]
Co-authors Robert Antonia
1999 Rehab H, Antonia RA, Djenidi L, 'Mixing of a High Sc Passive Scalar in aTurbulent Near-Wake', Proceedings of the 3rd ASME/JSME Joint Fluids Engineering Conference FEDSM'99 (1999) [E1]
Co-authors Robert Antonia
1999 Rehab H, Djenidi L, Antonia RA, 'LDV and PLIF Measurements in a Turbulent Boundary Layer Over a Rough Wall', Proceedings of the Second Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion (1999) [E1]
Co-authors Robert Antonia
1998 Rehab H, Antonia RA, Djenidi L, 'High Schmidt Number Passive Scalar in a Turbulent Near-Wake', Advances in Turbulence VII (1998) [E1]
Co-authors Robert Antonia
1998 Rehab H, Djenidi L, Antonia RA, 'LIF Measuremejnts in a Turbulent Far-Wake', Ninth International Suymposium on Applications of Laser Techniques (1998) [E1]
Co-authors Robert Antonia
1998 Elavarasan R, Djenidi L, Antonia RA, 'A Study of the Near-Wake Region of a Circular Cylinder', Ninth International Symposium on Applications of Laser Techniques to Fluid Mechanics (1998) [E1]
Co-authors Robert Antonia
1998 Djenidi L, Elavarasan R, Antonia RA, 'Turbulent Boundary Layer OverTransverse Square Cavities', Proceedings of 13th Australasian Fluid Mechanics Conference (2 volumes) (1998) [E1]
Citations Scopus - 1
Co-authors Robert Antonia
1998 Rehab H, Antonia RA, Djenidi L, 'Anisotropy of High Schmidt Number Passive Scalar Fluctuations in a Turbulent Near-Wake', Proceedings of 13th Australasian Fluid Mechanics Conference (2 volumes) (1998) [E1]
Co-authors Robert Antonia
1995 DJENIDI L, ANTONIA RA, 'RIBLET MODELING USING A 2ND-MOMENT CLOSURE', APPLIED SCIENTIFIC RESEARCH (1995)
DOI 10.1007/BF00863512
Citations Scopus - 6Web of Science - 7
Co-authors Robert Antonia
1993 DJENIDI L, ANTONIA RA, 'RIBLET FLOW CALCULATION WITH A LOW-REYNOLDS-NUMBER KAPPA-EPSILON MODEL', APPLIED SCIENTIFIC RESEARCH (1993)
Citations Scopus - 8Web of Science - 7
Co-authors Robert Antonia
1992 DJENIDI L, ANTONIA RA, 'A TURBULENT LOW REYNOLDS NUMBER K-epsilon MODEL FOR RIBLET FLOWS', ELEVENTH AUSTRALASIAN FLUID MECHANICS CONFERENCE, VOLS 1 AND 2 (1992)
Co-authors Robert Antonia
Show 48 more conferences
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Grants and Funding

Summary

Number of grants 35
Total funding $3,423,224

Click on a grant title below to expand the full details for that specific grant.


20141 grants / $15,000

Open loop flow control of a trubulent boundary layer over a smooth surface using well-suction $15,000

Funding body: University of Newcastle - Faculty of Engineering & Built Environment

Funding body University of Newcastle - Faculty of Engineering & Built Environment
Project Team Doctor Murali Talluru, Professor Lyazid Djenidi
Scheme Pilot Grant
Role Investigator
Funding Start 2014
Funding Finish 2014
GNo G1400978
Type Of Funding Internal
Category INTE
UON Y

20122 grants / $895,000

Effect of forcing on the turbulent mixing of a passive scalar$535,000

Funding body: ARC (Australian Research Council)

Funding body ARC (Australian Research Council)
Project Team Emeritus Professor Robert Antonia, Professor Lyazid Djenidi, Professor Luminita Danaila
Scheme Discovery Projects
Role Investigator
Funding Start 2012
Funding Finish 2014
GNo G1100203
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON Y

Study of a turbulent boundary layer over 2D and 3D rough walls$360,000

Funding body: ARC (Australian Research Council)

Funding body ARC (Australian Research Council)
Project Team Professor Lyazid Djenidi, Emeritus Professor Robert Antonia, Associate Professor Stefano Leonardi
Scheme Discovery Projects
Role Lead
Funding Start 2012
Funding Finish 2014
GNo G1100069
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON Y

20091 grants / $450,000

Turbulent mixing of a passive scalar$450,000

Funding body: ARC (Australian Research Council)

Funding body ARC (Australian Research Council)
Project Team Emeritus Professor Robert Antonia, Professor Lyazid Djenidi
Scheme Discovery Projects
Role Investigator
Funding Start 2009
Funding Finish 2011
GNo G0188686
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON Y

20083 grants / $29,206

Effects of Initial and Boundary Conditions on Turbulent Flows$20,000

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi, Emeritus Professor Robert Antonia
Scheme Near Miss Grant
Role Lead
Funding Start 2008
Funding Finish 2008
GNo G0188413
Type Of Funding Internal
Category INTE
UON Y

Modelling Fluid Flow in Micro-Channels$7,500

Funding body: University of Newcastle - Faculty of Engineering & Built Environment

Funding body University of Newcastle - Faculty of Engineering & Built Environment
Project Team Doctor Jennifer Forrester, Professor Lyazid Djenidi
Scheme Pilot Grant
Role Investigator
Funding Start 2008
Funding Finish 2008
GNo G0189096
Type Of Funding Internal
Category INTE
UON Y

14th Int Symp On Applicatipons ol Laser Techniqures to Fluid Mechanics, Lisbon (Portugal), 7/7/2008 - 10/7/2008$1,706

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Travel Grant
Role Lead
Funding Start 2008
Funding Finish 2008
GNo G0188918
Type Of Funding Internal
Category INTE
UON Y

20073 grants / $422,500

An Integrated Multi-Node Microfluidics Facility$400,000

Funding body: ARC (Australian Research Council)

Funding body ARC (Australian Research Council)
Project Team Professor Behdad Moghtaderi, Professor Geoffrey Evans, Professor Brian Haynes, Assoc. Prof A Masri, Professor Keith King, Dr Zeyad Alwahabi, Dr Jong-Leng Liow, Assoc. Prof Yinghe He, Laureate Professor Kevin Galvin, Conjoint Professor Bogdan Dlugogorski, Professor Eric Kennedy, Professor Lyazid Djenidi
Scheme Linkage Infrastructure Equipment & Facilities (LIEF)
Role Investigator
Funding Start 2007
Funding Finish 2007
GNo G0186649
Type Of Funding Scheme excluded from IGS
Category EXCL
UON Y

Effects of Initial and Boundary Conditions on Turbulent Flows$20,000

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi, Emeritus Professor Robert Antonia
Scheme Near Miss Grant
Role Lead
Funding Start 2007
Funding Finish 2007
GNo G0187181
Type Of Funding Internal
Category INTE
UON Y

11th European Turbulence Conference (ETC11), Porto (Portugal), 25/6/2007 - 28-/6/2007$2,500

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Travel Grant
Role Lead
Funding Start 2007
Funding Finish 2007
GNo G0187614
Type Of Funding Internal
Category INTE
UON Y

20063 grants / $560,782

A Fundamental Study on Microfluidic Characteristics of a Novel Micro-Reactor$10,000

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Behdad Moghtaderi, Professor Lyazid Djenidi
Scheme Near Miss Grant
Role Investigator
Funding Start 2006
Funding Finish 2006
GNo G0186070
Type Of Funding Internal
Category INTE
UON Y

13th International Symposium on Application of Laser Techniques to Fluid Mecanics 26-29 June$1,500

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Travel Grant
Role Lead
Funding Start 2006
Funding Finish 2006
GNo G0186530
Type Of Funding Internal
Category INTE
UON Y

20051 grants / $8,600

Study of turbulent boundary layer over a two-dimensional rough surface$8,600

Funding body: Australian Academy of Science

Funding body Australian Academy of Science
Project Team Professor Lyazid Djenidi
Scheme Scientific Visits to Europe
Role Lead
Funding Start 2005
Funding Finish 2005
GNo G0184433
Type Of Funding Other Public Sector - Commonwealth
Category 2OPC
UON Y

20042 grants / $8,997

Lattice Boltzmann simulation of a grid turbulence$7,542

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Project Grant
Role Lead
Funding Start 2004
Funding Finish 2004
GNo G0183391
Type Of Funding Internal
Category INTE
UON Y

12th International Symposium on Application of Laser Techniques to Fluid Mechanics, 12-15 July 2004, Lisbon$1,455

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Travel Grant
Role Lead
Funding Start 2004
Funding Finish 2004
GNo G0184131
Type Of Funding Internal
Category INTE
UON Y

20031 grants / $5,792

Control of turbulent flows.$5,792

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi, Conjoint Associate Professor Raj Rajagopalan
Scheme Project Grant
Role Lead
Funding Start 2003
Funding Finish 2003
GNo G0182404
Type Of Funding Internal
Category INTE
UON Y

20022 grants / $177,400

Integrated Particle Image Thermometry/Velocimetry Facility.$175,000

Funding body: ARC (Australian Research Council)

Funding body ARC (Australian Research Council)
Project Team Professor Behdad Moghtaderi, Professor Geoffrey Evans, Laureate Professor Graeme Jameson, Conjoint Professor Bogdan Dlugogorski, Emeritus Professor Terry Wall, Professor Dongke Zhang, Assoc. Prof Aibing Yu, Dr H Sidhu, Dr Rodney Weber, Dr Gregory Griffin, Professor Kiet Tieu, Professor Eric Kennedy, Laureate Professor Kevin Galvin, Professor Lyazid Djenidi, Associate Professor Anh Nguyen, Dr Geoffry Mercer
Scheme Linkage Infrastructure Equipment & Facilities (LIEF)
Role Investigator
Funding Start 2002
Funding Finish 2002
GNo G0181517
Type Of Funding Scheme excluded from IGS
Category EXCL
UON Y

11th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 8-11 July 2002, Lisbon$2,400

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Travel Grant
Role Lead
Funding Start 2002
Funding Finish 2002
GNo G0181951
Type Of Funding Internal
Category INTE
UON Y

20012 grants / $4,126

Rough wall turbulent boundary layers.$3,000

Funding body: AINSE (Australian Institute of Nuclear Science & Engineering)

Funding body AINSE (Australian Institute of Nuclear Science & Engineering)
Project Team Professor Lyazid Djenidi
Scheme Research Grant
Role Lead
Funding Start 2001
Funding Finish 2001
GNo G0180375
Type Of Funding Aust Competitive - Non Commonwealth
Category 1NS
UON Y

14th Australasian Fluid Mechanics Conference Adelaide 8-14 December, 2001$1,126

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Travel Grant
Role Lead
Funding Start 2001
Funding Finish 2001
GNo G0181560
Type Of Funding Internal
Category INTE
UON Y

20002 grants / $12,080

Computational Fluid Dynamics for rough Wall Turbulent Flows$10,000

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Project Grant
Role Lead
Funding Start 2000
Funding Finish 2000
GNo G0178946
Type Of Funding Internal
Category INTE
UON Y

10th Int Symposium: Applications of Laser Technology to Fluid Mech. Lisbon 10-13 July2000$2,080

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Travel Grant
Role Lead
Funding Start 2000
Funding Finish 2000
GNo G0179828
Type Of Funding Internal
Category INTE
UON Y

19991 grants / $174,000

Management of Turbulent Shear Flows$174,000

Funding body: ARC (Australian Research Council)

Funding body ARC (Australian Research Council)
Project Team Emeritus Professor Robert Antonia, Professor Lyazid Djenidi, Conjoint Associate Professor Raj Rajagopalan
Scheme Large Grant
Role Investigator
Funding Start 1999
Funding Finish 2001
GNo G0177756
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON Y

19982 grants / $14,077

Self-Sustaining Turbulence on Rough Walls.$12,000

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Project Grant
Role Lead
Funding Start 1998
Funding Finish 1998
GNo G0177380
Type Of Funding Internal
Category INTE
UON Y

9th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Portugal 13-16 July 1998$2,077

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Travel Grant
Role Lead
Funding Start 1998
Funding Finish 1998
GNo G0179759
Type Of Funding Internal
Category INTE
UON Y

19974 grants / $288,846

Accelerated solar brine concentration for zero site discharge. 1997 SPIRT PARTNER.$154,500

Funding body: First State Power

Funding body First State Power
Project Team Professor John Chambers, Professor Lyazid Djenidi
Scheme SPIRT Partner Funding
Role Investigator
Funding Start 1997
Funding Finish 1999
GNo G0179128
Type Of Funding Donation - Aust Non Government
Category 3AFD
UON Y

Accelerated solar brine concentration for zero site discharge$120,656

Funding body: ARC (Australian Research Council)

Funding body ARC (Australian Research Council)
Project Team Professor John Chambers, Professor Lyazid Djenidi
Scheme Strategic Partnerships with Industry - Research & Training Scheme (SPIRT)
Role Investigator
Funding Start 1997
Funding Finish 1999
GNo G0176388
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON Y

Turbulent Spot in a Laminar Boundary Layer.$8,000

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Project Grant
Role Lead
Funding Start 1997
Funding Finish 1997
GNo G0176716
Type Of Funding Internal
Category INTE
UON Y

Turbulent Boundary Layer over a d-Type Rough Surface$5,690

Funding body: AINSE (Australian Institute of Nuclear Science & Engineering)

Funding body AINSE (Australian Institute of Nuclear Science & Engineering)
Project Team Professor Lyazid Djenidi
Scheme Research Grant
Role Lead
Funding Start 1997
Funding Finish 1997
GNo G0176925
Type Of Funding Aust Competitive - Non Commonwealth
Category 1NS
UON Y

19963 grants / $203,900

EFECTS OF DIFFERENT SURFACE CONDITIONS ON A TURBULENT BOUNDARY LAYER$200,000

Funding body: ARC (Australian Research Council)

Funding body ARC (Australian Research Council)
Project Team Emeritus Professor Robert Antonia, Professor Lyazid Djenidi, Conjoint Associate Professor Raj Rajagopalan
Scheme Large Grant
Role Investigator
Funding Start 1996
Funding Finish 1998
GNo G0175285
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON Y

8th International Symposium on Application of Laser Techniques to Fluid Mechanics - Portugal - 8-11/7/96$2,400

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme Travel Grant
Role Lead
Funding Start 1996
Funding Finish 1996
GNo G0176368
Type Of Funding Internal
Category INTE
UON Y

Reynolds Number Effects in a Turbulent Boundary Layer$1,500

Funding body: AINSE (Australian Institute of Nuclear Science & Engineering)

Funding body AINSE (Australian Institute of Nuclear Science & Engineering)
Project Team Professor Lyazid Djenidi
Scheme Research Grant
Role Lead
Funding Start 1996
Funding Finish 1996
GNo G0175966
Type Of Funding Aust Competitive - Non Commonwealth
Category 1NS
UON Y

19951 grants / $10,000

Turbulent Boundary Layer over Grooved Surfaces$10,000

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Professor Lyazid Djenidi
Scheme New Staff Grant
Role Lead
Funding Start 1995
Funding Finish 1995
GNo G0175426
Type Of Funding Internal
Category INTE
UON Y

19911 grants / $142,918

Study of Coherent Structures in a Riblet Wall$142,918

Funding body: ARC (Australian Research Council)

Funding body ARC (Australian Research Council)
Project Team Professor Lyazid Djenidi
Scheme Australian Postdoctoral Research Fellowship
Role Lead
Funding Start 1991
Funding Finish 1993
GNo G0174283
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON Y
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Research Supervision

Number of supervisions

Completed6
Current4

Total current UON EFTSL

PhD2.2

Current Supervision

Commenced Level of Study Research Title / Program / Supervisor Type
2015 PhD Manufacturing and Properties of Composites
PhD (Mechanical Engineering), Faculty of Engineering and Built Environment, The University of Newcastle
Co-Supervisor
2015 PhD Computational Fluid Dynamics Simulation of Microfluidic Systems at Microscale in a Laminar Channel Flow
PhD (Mechanical Engineering), Faculty of Engineering and Built Environment, The University of Newcastle
Principal Supervisor
2013 PhD On the Effects of Non-Homogeneity on Small Scale Turbulence
PhD (Mechanical Engineering), Faculty of Engineering and Built Environment, The University of Newcastle
Principal Supervisor
2011 PhD Perlite Composites and Properties
PhD (Mechanical Engineering), Faculty of Engineering and Built Environment, The University of Newcastle
Co-Supervisor

Past Supervision

Year Level of Study Research Title / Program / Supervisor Type
2016 Masters A Validity Framework Theory and Fatigue Damage Function for an S-N Plane
M Philosophy (Mechanical Eng), Faculty of Engineering and Built Environment, The University of Newcastle
Co-Supervisor
2008 Masters Lattice Boltzmann Simulation of Fluid Mixing in T-Shaped Micromixer
M Eng (Mechanical) [R], Faculty of Engineering and Built Environment, The University of Newcastle
Principal Supervisor
2007 Masters Numerical Simulation in laminar flows
Mechanical Engineering, Australian Catholic University
Sole Supervisor
2006 PhD Effects of Initial Conditions on Decaying Grid Turbulence
PhD (Mechanical Engineering), Faculty of Engineering and Built Environment, The University of Newcastle
Principal Supervisor
2004 PhD Effect of Suction on a Turbulent Boundary Layer
PhD (Mechanical Engineering), Faculty of Engineering and Built Environment, The University of Newcastle
Principal Supervisor
2002 PhD The Turbulent Kinetic Energy in Boundary Layers and Grid Turbulence
PhD (Mechanical Engineering), Faculty of Engineering and Built Environment, The University of Newcastle
Co-Supervisor
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Professor Lyazid Djenidi

Position

Professor
School of Engineering
Faculty of Engineering and Built Environment

Focus area

Mechanical Engineering

Contact Details

Email lyazid.djenidi@newcastle.edu.au
Phone (02) 4921 6184
Fax (02) 4921 6946

Office

Room TA106
Building Engineering Science - D.W. George
Location Callaghan
University Drive
Callaghan, NSW 2308
Australia
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