Mr Aleksej Lavrinec

Mr Aleksej Lavrinec

Research Associate

School of Engineering

Career Summary

Biography

Mr Lavrinec has joined the University as a PhD student in April 2017. The PhD project he worked on involved the investigation of dense phase pneumatic conveying using an inertial measurement unit and CFD-DEM simulations. The research conducted as part of this project has resulted in seven journal publications as well as five conference papers.

While working on his PhD Mr Lavrinec had worked as a research assistant at the Centre for Bulk Solids and Particulate Technologies. He has been involved in various research projects in various areas of bulk solids handling, but the majority of work has been concentrated on particulate matter and dustiness.

After submitting the PhD thesis, Mr Lavrinec has continued to be employed as a research assistant working on low cost methods for particulate matter measurement, dewatering and DEM simulations.


Qualifications

  • Bachelor of Mechanical Engineering (Honours), University of Edinburgh - Scotland

Keywords

  • Bulk Solids
  • Discrete Element Modelling
  • Pneumatic Conveying

Languages

  • Russian (Mother)
  • English (Fluent)
  • Lithuanian (Fluent)

Fields of Research

Code Description Percentage
401799 Mechanical engineering not elsewhere classified 100

Professional Experience

UON Appointment

Title Organisation / Department
Research Associate University of Newcastle
School of Engineering
Australia
Research Associate University of Newcastle
School of Engineering
Australia
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.


Journal article (9 outputs)

Year Citation Altmetrics Link
2021 Lavrinec A, Orozovic O, Rajabnia H, Williams K, Jones MG, Klinzing GE, 'An assessment of steady-state conditions in single slug horizontal pneumatic conveying', Particuology, (2021)

This study used a 3D coupled CFD¿DEM model to assess how slugs tend towards steady state in single slug horizontal pneumatic conveying. Initial slug length, inlet velocity and ini... [more]

This study used a 3D coupled CFD¿DEM model to assess how slugs tend towards steady state in single slug horizontal pneumatic conveying. Initial slug length, inlet velocity and initial stationary layer fractions were systematically varied for a total of 72 simulations. Previously made observation that slugs tend towards a steady state was confirmed via a theoretical derivation. The derivation shows that slugs move towards their steady state lengths exponentially. This allowed for a calculation of a characteristic time scale which is a measure of how quickly a slug tends towards the steady state. The theoretical estimate which is a function of slug porosity, steady length, velocity and stationary layer fraction has good agreement with simulated results. A link between steady slug length and solids loading ratio was also shown.

DOI 10.1016/j.partic.2021.04.007
Co-authors Ognjen Orozovic, Ken Williams
2021 Lavrinec A, Orozovic O, Rajabnia H, Williams K, Jones MG, Klinzing G, 'Inertial measurement unit as a tool within dense phase pneumatic conveying. Investigation into velocity measurement accuracy, pressure and velocity relationships in slug flow', Powder Technology, 382 454-466 (2021) [C1]

This paper presents the results of using an inertial measurement unit (IMU) to study various dynamic relationships in horizontal slug flow pneumatic conveying. The accuracy of the... [more]

This paper presents the results of using an inertial measurement unit (IMU) to study various dynamic relationships in horizontal slug flow pneumatic conveying. The accuracy of the IMU was assessed and compared to particle image velocimetry (PIV) and once good agreement was confirmed it was used to investigate various aspects of slug flow. Relative movement between core particles and slugs tails and heads was assessed using relative pressures and quantified times spent in a slug. It was found that the propagation of particles backwards through a slug is relatively constant. Pressure-velocity relationship was observed that was theorised to be related to variations in stationary layer ahead of the slugs. Observations of further nuanced features of slug motion are also included to demonstrate the capabilities of IMUs in capturing the many dynamic aspects of the flow.

DOI 10.1016/j.powtec.2020.11.015
Co-authors Ognjen Orozovic, Ken Williams
2021 Orozovic O, Lavrinec A, Georgiou F, Wensrich CM, 'A continuum mechanics derivation of the empirical expression relating slug and particle velocities', POWDER TECHNOLOGY, 380 598-601 (2021) [C1]
DOI 10.1016/j.powtec.2020.11.005
Co-authors Ognjen Orozovic, Christopher Wensrich
2020 Orozovic O, Lavrinec A, Alkassar Y, Chen J, Williams K, Jones MG, Klinzing GE, 'Insights into horizontal slug flow pneumatic conveying from layer fraction and slug velocity measurements', Powder Technology, 364 218-228 (2020) [C1]
DOI 10.1016/j.powtec.2020.01.080
Citations Scopus - 5Web of Science - 3
Co-authors Mark Jones, Jian Chen, Ognjen Orozovic, Ken Williams
2020 Orozovic O, Lavrinec A, Rajabnia H, Williams K, Jones MG, Klinzing GE, 'Transport boundaries and prediction of the slug velocity and layer fraction in horizontal slug flow pneumatic conveying', Chemical Engineering Science, 227 (2020) [C1]
DOI 10.1016/j.ces.2020.115916
Citations Scopus - 3Web of Science - 1
Co-authors Mark Jones, Ken Williams, Ognjen Orozovic
2020 Lavrinec A, Orozovic O, Rajabnia H, Williams K, Jones MG, Klinzing G, 'Velocity and porosity relationships within dense phase pneumatic conveying as studied using coupled CFD-DEM', Powder Technology, 375 89-100 (2020) [C1]
DOI 10.1016/j.powtec.2020.07.070
Citations Scopus - 3Web of Science - 1
Co-authors Ognjen Orozovic, Mark Jones, Ken Williams
2020 Ilic D, Lavrinec A, Orozovic O, 'Simulation and analysis of blending in a conveyor transfer system', Minerals Engineering, 157 (2020) [C1]
DOI 10.1016/j.mineng.2020.106575
Citations Web of Science - 1
Co-authors Ognjen Orozovic, Dusan Ilic
2019 Orozovic O, Lavrinec A, Alkassar Y, Williams K, Jones MG, Klinzing G, 'On the kinematics of horizontal slug flow pneumatic conveying and the relationship between slug length, porosity, velocities and stationary layers', Powder Technology, 351 84-91 (2019) [C1]
DOI 10.1016/j.powtec.2019.04.017
Citations Scopus - 6Web of Science - 5
Co-authors Mark Jones, Ken Williams, Ognjen Orozovic
2019 Lavrinec A, Orozovic O, Williams K, Jones MG, Klinzing G, Clark W, Wang Z, 'Observations of dense phase pneumatic conveying using an inertial measurement unit', Powder Technology, 343 436-444 (2019) [C1]
DOI 10.1016/j.powtec.2018.11.039
Citations Scopus - 10Web of Science - 9
Co-authors Mark Jones, Ognjen Orozovic, Ken Williams
Show 6 more journal articles

Conference (6 outputs)

Year Citation Altmetrics Link
2019 Ilic D, Lavrinec A, Williams K, 'Revised Coal Dustiness Test Method AS4156.6 -Part 2: Preparation', 13th International Conference on Bulk Materials, Storage, Handling and Transportation (ICBMH2019), Gold Coast, Australia (2019) [E1]
Co-authors Dusan Ilic, Ken Williams
2019 Orozovic O, Lavrinec A, Williams KC, Jones MG, Klinzing GE, 'Deduction of material characteristics from the relation between slug velocity and stationary layers', 13th International Conference on Bulk Materials, Storage, Handling and Transportation (ICBMH 2019), Gold Coast, Australia (2019) [E1]
Co-authors Mark Jones, Ognjen Orozovic, Ken Williams
2019 Orozovic O, Lavrinec A, Williams KC, Jones M, Klinzing G, Clark W, 'The pressure relationships of the particle exchanges in horizontal slug flow pneumatic conveying', 13th International Conference on Bulk Materials, Storage, Handling and Transportation (ICBMH 2019), Gold Coast, QLD (2019) [E1]
Co-authors Ognjen Orozovic, Ken Williams, Mark Jones
2019 Lavrinec A, Orozovic O, Willis J, Williams K, Jones M, 'Calibration of coupled CFD-DEM using a bench scale pseudo 2D single spout fluidised bed apparatus', 13th International Conference on Bulk Materials, Storage, Handling and Transportation (ICBMH 2019), Gold Coast, Australia (2019) [E1]
Co-authors Jason Willis, Ognjen Orozovic, Ken Williams, Mark Jones
2018 Orozovic O, Lavrinec A, Williams K, Jones M, Guo J, 'The influence of velocity inputs in the prediction of the stationary layer in horizontal slug flow', 9th International Conference for Conveying and Handling of Particulate Solids, London, the United Kingdom (2018)
Co-authors Jie Guo, Mark Jones, Ognjen Orozovic, Ken Williams
2018 Lavrinec A, Orozovic O, Williams K, Jones M, Klinzing G, Clark W, 'Dense Phase Pneumatic Conveying Investigation Using an In-Situ Microprobe Sensor', London (2018)
Co-authors Mark Jones, Ken Williams, Ognjen Orozovic
Show 3 more conferences

Report (2 outputs)

Year Citation Altmetrics Link
2020 Ilic D, Lavrinec A, 'Evaluation of aerosol monitor performance', VGT Pty Ltd/Innovation Connections (NSW DIIS) (2020)
Co-authors Dusan Ilic
2019 Ilic D, Lavrinec A, 'Ascertaining Design Parameters for ROM Stockpile Wind Fence', MACH Energy Australia Pty Ltd, 24 (2019)
Co-authors Dusan Ilic
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Grants and Funding

Summary

Number of grants 4
Total funding $254,674

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


20211 grants / $150,000

Update of Coal Dustiness and Dust Extinction Moisture Standard AS4156.6$150,000

Funding body: Australian Coal Research Limited

Funding body Australian Coal Research Limited
Project Team Doctor Dusan Ilic, Professor Kenneth Williams, Mr Aleksej Lavrinec
Scheme Australian Coal Association Research Program (ACARP)
Role Investigator
Funding Start 2021
Funding Finish 2022
GNo G2001050
Type Of Funding C1700 - Aust Competitive - Other
Category 1700
UON Y

20203 grants / $104,674

Evaluation of aerosol monitor performance for dust emissions$48,486

Funding body: Department of Industry, Innovation and Science

Funding body Department of Industry, Innovation and Science
Project Team Doctor Dusan Ilic, Mr Aleksej Lavrinec, Professor Kenneth Williams, Professor Craig Wheeler
Scheme Entrepreneurs' Programme: Innovation Connections
Role Investigator
Funding Start 2020
Funding Finish 2021
GNo G2000413
Type Of Funding C2200 - Aust Commonwealth – Other
Category 2200
UON Y

Evaluation of aerosol monitor performance for dust emissions$47,788

Funding body: VGT Pty Ltd

Funding body VGT Pty Ltd
Project Team Doctor Dusan Ilic, Mr Aleksej Lavrinec, Professor Kenneth Williams, Professor Craig Wheeler
Scheme Entrepreneurs' Programme: Innovation Connections
Role Investigator
Funding Start 2020
Funding Finish 2021
GNo G2000386
Type Of Funding C3100 – Aust For Profit
Category 3100
UON Y

Moisture Migration of Coal in a Vertical Column $8,400

Funding body: Introspec Consulting Pty Ltd

Funding body Introspec Consulting Pty Ltd
Project Team Doctor Dusan Ilic, Professor Kenneth Williams, Mr Aleksej Lavrinec
Scheme Research Grant
Role Investigator
Funding Start 2020
Funding Finish 2021
GNo G2001336
Type Of Funding C3100 – Aust For Profit
Category 3100
UON Y
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Mr Aleksej Lavrinec

Positions

Research Associate
CBSPT
School of Engineering
College of Engineering, Science and Environment

Research Associate
CBSPT
School of Engineering
College of Engineering, Science and Environment

Contact Details

Email aleksej.lavrinec@newcastle.edu.au
Mobile 0435105305

Office

Room A732
Building NIER Building, A Block
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