Dr Zaman Kamruzzaman

Dr Zaman Kamruzzaman

Casual Research Assistant

School of Engineering

Career Summary

Biography

Md Kamruzzaman (Zaman)  is working currently as a  Research Assistant at the School of Engineering, Faculty of Engineering and Built Environment. He completed his PhD studies in Mechanical Engineering in 2016 under the supervision of Professor Lyazid Djenidi and Em. Professor R. A. Antonia, at the University of Newcastle.

Mr Zaman completed his B.Sc. degree in Mathematics in 2009 with a high distinction in Khulna University, Bangladesh. Later he studied M.Sc in Applied Mathematics and completed in 2012 at the same university where he started his research. He involved into fluid mechanics research in Mathematics discipline Khulna university during his Master's degree, at this time he also concentrated on mainly fundamental fluid mechanics, computing for the simulation ,magneto-hydrodynamics(MHD), rotating fluid flow, duct flow etc... Before completing his Master's Degree he got an PhD offer from University of Newcastle, Australia in 2011 then he moved Newcastle in 2012 as a PhD student after completing MSc.

Recently he completed a PhD in Mechanical Engineering and his PhD dissertation title is, "On the effects of non-homogeneity on small scale turbulence". He is working now on the classical grid turbulence, turbulent boundary layer ( smooth and Rough), turbulent shear mixing layer and turbulent shearless mixing layer (Nobel work).


Qualifications

  • Doctor of Philosophy, University of Newcastle
  • Bachelor of Science, Khulna University - Bangladesh
  • Master of Mathematics, Khulna University - Bangladesh

Keywords

  • Fluid Mechanics
  • Jet turbulence
  • Magnetohydrodynamics
  • Numerical Analysis
  • Turbulent Boundary Layer
  • Turbulent Flow Control
  • Turbulent Shear and Shearless Mixing Layer

Languages

  • Bengali (Mother)
  • English (Fluent)

Fields of Research

Code Description Percentage
091508 Turbulent Flows 40
010207 Theoretical and Applied Mechanics 30
010301 Numerical Analysis 30

Professional Experience

UON Appointment

Title Organisation / Department
Casual Academic University of Newcastle
School of Mathematical and Physical Sciences
Australia

Academic appointment

Dates Title Organisation / Department
24/09/2017 - 28/02/2019 Assistant Professor

Overview of American International University-Bangladesh (AIUB)

American International University - Bangladesh (AIUB) is a government approved private university founded in 1994 by Dr. Anwarul Abedin. The university is an independent organization with its own Board of Trustees.

Vision

AMERICAN INTERNATIONAL UNIVERSITY-BANGLADESH (AIUB) envisions promoting professionals and excellent leadership catering to the technological progress and development needs of the country.

Mission

AMERICAN INTERNATIONAL UNIVERSITY-BANGLADESH (AIUB) is committed to provide quality and excellent computer-based academic programs responsive to the emerging challenges of the time. It is dedicated to nurture and produce competent world class professional imbued with strong sense of ethical values ready to face the competitive world of arts, business, science, social science and technology.

Quality Policy

“Quality shall be adhered to in conformity with the prescribed national and international standards of quality and excellence including those provided by the professional bodies and organizations. The American International University- Bangladesh is committed to translate into actions the programs, projects and activities related to the sustainable delivery of quality management operation system. The students being the valued customers are the central focus of the university shall be provided with utmost care and attention to meet their primordial needs and future career success. In view of this commitment, the university shall exert best efforts to harmonize its action through collaboration, cooperation and consultation with every unit and components of the university.”

American International University Bangladesh
Mathematics
Bangladesh

Professional appointment

Dates Title Organisation / Department
2/05/2016 - 17/05/2018 Resarch Assistant

Research Assistant:  Pursued fundamental research to study the small-scale turbulence in grid generated turbulence using classical and composite grids (shear and shearless mixing layers) and 2D rough wall boundary layer under the supervision of Prof. Lyazid Djenidi and Emeritus Prof. R.A.Antonia. For the first time, shearless and shear mixing layer turbulent flows are being investigated by using a tailor made the composite grid as a part of my current research.
Key responsibilities:
Wind tunnel design and modification.
Wind tunnel testing.
Hot-wire probe build.
Measurements.
Data collection and analysis.
Computer coding.
Formulating new ideas and solving Mathematical problems.
Numerical analysis.
Preparing oral presentation for the international conferences.
Publishing journal papers.

Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Mechanical Engineering
Australia

Teaching

Code Course Role Duration
MECH-2700 Thermo and Fluid Dynamics
Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Tutoring to the undergraduate students
Casual academic faculty 24/07/2017 - 24/12/2017
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Publications

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


Journal article (10 outputs)

Year Citation Altmetrics Link
2018 Kamruzzaman M, Djenidi L, Antonia RA, 'Behaviour of the energy dissipation coefficient in a rough wall turbulent boundary layer', Experiments in Fluids, 59 (2018) [C1]
DOI 10.1007/s00348-017-2467-y
Citations Scopus - 1
Co-authors Lyazid Djenidi, Robert Antonia
2017 Djenidi L, Lefeuvre N, Kamruzzaman M, Antonia RA, 'On the normalized dissipation parameter C-epsilon in decaying turbulence', JOURNAL OF FLUID MECHANICS, 817 61-79 (2017) [C1]
DOI 10.1017/jfm.2017.110
Citations Scopus - 6Web of Science - 6
Co-authors Lyazid Djenidi, Robert Antonia
2016 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 (2016) [C1]
DOI 10.1017/jfm.2015.665
Citations Scopus - 5Web of Science - 5
Co-authors Robert Antonia, Lyazid Djenidi
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, Lyazid Djenidi
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 - 12Web of Science - 9
Co-authors Lyazid Djenidi, 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 - 5Web of Science - 4
Co-authors Lyazid Djenidi, Robert Antonia
2014 Wahiduzzaman M, Kamruzzaman M, Alam MM, Ferdows M, 'Magnetic field effect on fluid flow through a rotating rectangular straight duct with large aspect ratio', PROGRESS IN COMPUTATIONAL FLUID DYNAMICS, 14 398-405 (2014) [C1]
DOI 10.1504/PCFD.2014.065465
Citations Scopus - 1Web of Science - 1
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 = Tr100000, Dn500, 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
Citations Scopus - 1
Co-authors Lyazid Djenidi
2013 Wahiduzzaman M, Kamruzzaman M, Alam MM, Ferdows M, 'Magnetic effect on direct numerical simulations of fluid flow through a rotating rectangular straight duct', INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, 42 327-342 (2013) [C1]
DOI 10.3233/JAE-131666
Citations Scopus - 2Web of Science - 2
2013 Md Kamruzzaman, Kamruzzaman M, 'Behaviours of energy spectrum at low Reynolds number in grid turbulence', International Journal of Mechanical, Industrial Science and Engineering, 7 (2013)
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Conference (8 outputs)

Year Citation Altmetrics Link
2016 Kamruzzaman M, Djenidi L, Antonia RA, 'Turbulent Sheared Mixing Layer Generated with a Composite Grid', FLUID-STRUCTURE-SOUND INTERACTIONS AND CONTROL, Perth, AUSTRALIA (2016) [E1]
DOI 10.1007/978-3-662-48868-3_45
Co-authors Robert Antonia, Lyazid Djenidi
2016 Djenidi L, Kamruzzaman M, Antonia RA, 'Energy Dissipation rate parameter in a rough wall turbulent boundary layer', Australia (2016)
Co-authors Robert Antonia, Lyazid Djenidi
2015 Talluru KM, Kamruzzaman M, Djenidi L, Antonia RA, 'Amplitude modification of small-scales in a rough wall turbulent boundary wall', Perth Australia (2015)
Co-authors Robert Antonia, Lyazid Djenidi
2015 Kamruzzaman M, Djenidi L, Antonia RA, 'Shearless mixing layer in grid generated turbulence at moderate Reynolds number', 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015 (2015)

The decay of turbulence in a shearless mixing layer generated from the junction of side by side grids with different mesh sizes but identical solidity is being investigated using ... [more]

The decay of turbulence in a shearless mixing layer generated from the junction of side by side grids with different mesh sizes but identical solidity is being investigated using hot wire anemometry. It is observed that turbulence decays according to a power-law, albeit, with a different power-law exponent (n) for each grid. The measurements suggest the existence of turbulent energy transfer from the larger mesh region to the smaller mesh region at distances as large as 75 MLfrom the grid, where MLis the mesh size of the larger mesh grid. It is further observed that the Reynolds number R¿remains constant along the centreline of the flow (i.e. the junction of the two grids), confirming that self-preservation is satisfied in this region of the flow. This is supported by the one dimensional velocity spectra Eu(k1). On the centreline, the measured energy spectra at positions x/ML= 45 collapse onto a single curve at all wavenumbers when scaled by either the Kolmogorov velocity and length scales or the rms velocity (u!) and Taylor microscale (X). Away from the centreline the spectra do not present such collapse.

Co-authors Lyazid Djenidi, Robert Antonia
2015 Talluru KM, Kamruzzaman M, Djenidi L, Antonia RA, 'Self-preservation in zero pressure gradient turbulent boundary layers', 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015 (2015)

Starting with the Navier-Stokes Equation (NSE), we derived the conditions for self-preservation (SP) in a zeropressure gradient (ZPG) turbulent boundary layer. The analysis showed... [more]

Starting with the Navier-Stokes Equation (NSE), we derived the conditions for self-preservation (SP) in a zeropressure gradient (ZPG) turbulent boundary layer. The analysis showed that it is strictly not possible to obtain SP in a ZPG turbulent boundary layer, unless the viscous term is eliminated from the NSE. This can be achieved in a smooth wall boundary layer only when the Reynolds number (Re) approaches infinity. In the case of rough walls, it is noted that the viscous effects can be compensated by surface roughness and therefore, SP is achievable, irrespective of Re. In this case, SP analysis showed that velocity scale (u*) must be constant and the length scale (l) should vary linearly with streamwise distance (x). These SP conditions are tested using experimental data taken over a similar streamwise fetch on a smooth wall and several types of rough walls. It is observed that complete SP in a ZPG turbulent boundary layer is possible when the roughness height (¿) increases linearly with x, where both the SP constraints (u*=UT= constant and l = d ¿ x) are met. In the present rough wall study, UTis observed to remain practically constant in x and d ~ x and appears to be the next best candidate for achieving SP.

Co-authors Lyazid Djenidi, 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&apos;2~(t - To)n , q&apos;2is the total turbulen... [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'2is 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 - 1Web of Science - 1
Co-authors Robert Antonia, Lyazid Djenidi
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 Utto within 3%. Further, the drag coefficient (CD) is observed to be independent of the Reynolds number.

Citations Scopus - 2
Co-authors Lyazid Djenidi, Robert Antonia
2011 Kamruzzaman M, Mahmud Alam M, 'Magnetic effect on direct numerical simulations of fluid flow through a rotating rectangular straight duct', Bangladesh (2011)
Show 5 more conferences
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Grants and Funding

Summary

Number of grants 1
Total funding $20,000

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


20171 grants / $20,000

Effects of wall suction rate over a 2D transverse rod in the rough wall turbulent boundary layer.$20,000

This project aims at investigating the response of a rough wall turbulent boundary layer subjected to a wall suction. Measurements will be carried out using hot-wire anemometry in two of our wind tunnels and the roughness will consist in 2D transverse rods mounted on the floor of the wind tunnels. Suction will be applied through a porous strip. The study is intended to generate new knowledge in the area of turbulent boundary layers, required for developing effective flow control strategies to achieve outcomes such as drag reduction and mixing enhancement.

Funding body: Faculty of Engineering and Built Environment - The University of Newcastle (Australia)

Funding body Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Project Team

Md Kamruzzaman; Prof. Lyazid Djenidi

Scheme FEBE Strategic Pilot Grant
Role Lead
Funding Start 2017
Funding Finish 2017
GNo
Type Of Funding Internal
Category INTE
UON N
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Research Supervision

Number of supervisions

Completed1
Current0

Past Supervision

Year Level of Study Research Title Program Supervisor Type
2017 Honours The effects of wall suction on the turbulent boundary layer Mechanical Engineering, Faculty of Engineering and Built Environment - The University of Newcastle (Australia) Co-Supervisor
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Dr Zaman Kamruzzaman

Positions

Casual Research Assistant
Turbulence Research Group
School of Engineering
Faculty of Engineering and Built Environment

Casual Academic
Turbulence Research Group
School of Mathematical and Physical Sciences
Faculty of Science

Contact Details

Email md.kamruzzaman@newcastle.edu.au
Phone (02) 49854938
Mobile +610470308904

Office

Room TA-204
Building TA Building
Location Callaghan
University Drive
Callaghan, NSW 2308
Australia
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