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Dr. Tim Persoons

Associate Professor (Mechanical, Manuf & Biomedical Eng)
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Dr. ir. Tim Persoons is Associate Professor in the Department of Mechanical, Manufacturing & Biomedical Engineering at TCD since 2019, where he was Assistant Professor since 2013. He has been a visiting Faculty member in the NSF I/UCRC Cooling Technologies Research Center (CTRC) at Purdue University, West Lafayette IN, USA since 2009, and was Visiting Assistant Professor in the Department of Mechanical Engineering, KU Leuven, Belgium during 2009-2010.

Tim received his Doctorate in Engineering at KU Leuven in 2006 and his MSc in Mechanical Engineering at KU Leuven in 1999. He was awarded an Irish Research Council (IRC) Postdoctoral Fellowship in 2008, an IRC/Marie Curie INSPIRE International Mobility Fellowship in 2010, and Senior Research Fellowship in TCD in 2012. Tim was co-recipient of the 2013 Hartnett-Irvine Award from the International Centre for Heat and Mass Transfer.

Dr. Persoons' research activities include multi-scale convective heat transfer in electronics thermal management using unsteady flows, active flow control for sustainable energy technologies, and developing experimental thermal fluid measurement techniques.

Tim has authored more than 100 peer-reviewed journal articles, conference publications, keynote and invited lectures. He has served in editorial roles for IEEE Transactions on Components, Packaging & Manufacturing Technology (2016-present), Experimental Thermal & Fluid Science (2020-present) and Journal of Electronic Packaging (2009-2010). He is a member of the Scientific Committees of THERMINIC and EuroTherm, IEEE ITherm Ambassador, and has co-organized several technical-scientific workshops (e.g., THERMINIC-2009, PowerMEMS-2010) and the Workshops on Thermal Management in Telecom Systems and Data Centers (2010, 2012, 2015) in collaboration with CTRC.

Read more on https://timpersoons.org/
  Applied thermodynamics and energy   Fluids and vibration   HEAT TRANSFER   Imaging Techniques   JET IMPINGEMENT HEAT TRANSFER   LASER-DOPPLER VELOCIMETRY   LASERS AND LASER APPLICATIONS   PARTICLE IMAGE VELOCIMETRY   SIMULTANEOUS VELOCITY AND HEAT FLUX MEASUREMENTS   Thermal Engineering   TRANSIENT AND UNSTEADY HEAT TRANSFER   Vehicle technology   VELOCITY-MEASUREMENT
 Novel passive thermal management solutions for small-scale electronics cooling
 Development of a low cost pulsed LED velocity measurement for sustainable data centres
 Two-phase thermoelectric generator cooler
 Developing a high dynamic range PIV technique with applications in thermal fluids engineering and environmental flows
 A numerical-experimental analysis of air flow, heat transfer and aeroacoustics to develop new architectures for rack-mounted servers in next generation sustainable data centres

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Details Date
Program Co-chair, 28th International Workshops on Thermal Investigations of ICs and Systems (THERMINIC) hosted by Trinity College Dublin Sep 21-23, 2022
Associate Editor, IEEE Transactions on Components, Packaging and Manufacturing Technology 2016
Associate Editor/Editorial Advisory Board Member, Experimental Thermal and Fluid Science 2020
Guest Editor, Journal of Electronic Packaging-Transactions of the ASME 2009
Scientific Committee Member, International Workshop on Thermal Investigations of ICs and Systems (THERMINIC) 2009
Ambassador, IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm) 2019
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Details Date From Date To
Associate Editor, IEEE Transactions on Components, Packaging and Manufacturing Technology Jan 2016
Associate Editor/Member of the Editorial Advisory Board, Experimental Thermal & Fluid Science (Elsevier) Jan 2020
Scientific Committee Member, Workshops on Thermal Investigations of ICs and Systems (THERMINIC) Jan 2009
Guest Editor, Journal of Electronic Packaging-Transactions of the ASME Jan 2009 Dec 2010
Ambassador, IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm) Jan 2019
Funded Investigator, SFI Strategic Partnership on Energy System Integration (ESIPP) Oct 2015
Funded Investigator, SFI Research Centre for Future Networks & Communications (CONNECT) Aug 2017
Funded Investigator, SFI Research Centre for Pharmaceuticals (SSPC) Oct 2019
Funded Investigator, SFI Research Centre for Energy, Climate and Marine (MaREI) Oct 2020
Member, Institute of Electrical and Electronics Engineers (IEEE) Jan 2018
Member, American Society of Thermal and Fluids Engineers (ASTFE) Jan 2016
Member, American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), T-TAC-TC09.09 Mission critical facilities, data centers, technology spaces and electric equipment Jan 2018
Member, American Institute of Aeronautics and Astronautics (AIAA) May 2014 Dec 2016
Member, European Research Community On Flow, Turbulence and Combustion (ERCOFTAC) Jan 2014 Dec 2016
Wasala, S., Stevens, L., Sosseh, R. and Persoons, T., Numerical analysis of acoustic noise from an electronic cooling fan at flow disturbed by an external obstacle, 51st International Congress on Noise Control Engineering, Glasgow, UK, 21"24 August 2022, 2022, Conference Paper, PUBLISHED  URL
Marina Navas-Bachiller, Tim Persoons, Deirdre M. D'Arcy, Exploring bulk volume, particle size and particle motion definitions to increase the predictive ability of in vitro dissolution simulations, European Journal of Pharmaceutical Sciences, 2022, p106185 , Journal Article, PUBLISHED  DOI
Blythman, R. and Alimohammadi, S. and Jeffers, N. and Murray, D.B. and Persoons, T., Heat Transfer Analysis of Laminar Pulsating Flow in a Rectangular Channel Using Infrared Thermography, Journal of Heat Transfer, 144, (1), 2022, Notes: [cited By 0], Journal Article, PUBLISHED  DOI
Farrell, G. and Gibbons, M. and Persoons, T., Combined Passive/Active Flow Control of Drag and Lift Forces on a Cylinder in Crossflow Using a Synthetic Jet Actuator and Porous Coatings, Actuators, 11, (7), 2022, Notes: [cited By 0], Journal Article, PUBLISHED  DOI
Paula Murphy, Tim Persoons, Seamus O"Shaughnessy, The use of hot film sensors for the heat flux measurement of impinging jet flows: A comparison of postprocessing methods, Heat and Mass Transfer, 2022, Journal Article, PUBLISHED  DOI
Persoons, T., Measuring flow velocity and turbulence fields in thermal sciences using particle image velocimetry, Advances in Heat Transfer, 2022, Notes: [cited By 0], Journal Article, PUBLISHED  DOI
Wasala, S.H. and Xue, Y. and Wiegandt, T. and Stevens, L. and Persoons, T., Aeroacoustic noise prediction from a contra-rotating cooling fan used in data center cooling systems, (AIAA 2021-2313), 2021, Notes: [cited By 0], Conference Paper, PUBLISHED  DOI
Wasala, S. and Xue, Y. and Stevens, L. and Wiegandt, T. and Persoons, T., Numerical simulations of flow induced noise from a dual rotor cooling fan used in electronic cooling systems, 2021, Notes: [cited By 0], Conference Paper, PUBLISHED  DOI
Battaglioli, S. and James, O. and Gibbons, M.J. and Persoons, T., Simplified Steady-State Representation of Slot Synthetic Jet Actuators to Enable Numerical Optimization with Steady RANS Simulations, IEEE Transactions on Components, Packaging and Manufacturing Technology, 11, (11), 2021, p1750-1758 , Notes: [cited By 0], Journal Article, PUBLISHED  DOI
Guinness, I. and Persoons, T., Passive flow control for drag reduction on a cylinder in cross-flow using leeward partial porous coatings, Fluids, 6, (8), 2021, Notes: [cited By 0], Journal Article, PUBLISHED  DOI
  

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Persoons, T, Invited talk: Flow unsteadiness for enhanced electronics cooling: Synthetic jets, Invited seminar for the Graduate School of the College of Engineering, Purdue University, West Lafayette, IN, USA, Feb 12, 2019, 2019, Conference Paper, PUBLISHED
Persoons, T, Optical Illusions in the Quest to Reduce the Internet's Energy Bills, TCD Annual Review 2016-2017, 2017, p36-37 , Journal Article, PUBLISHED
Persoons, T, Invited talk: High dynamic range PIV for experimental research on transport phenomena, Invited seminar at the Department of Mechanical Engineering, KU Leuven, Leuven, Belgium, Apr 19, 2016, 2016, Conference Paper, PUBLISHED
Persoons, T, Invited panel: Current and future ICT thermal management challenges - Performance, efficiency, and IoT, 3rd Workshop on Thermal Management in Telecommunication Systems and Data Centers, Redwood City, CA, USA, 4-5 Nov 2015, 2015, Conference Paper, PUBLISHED
Persoons, T, Invited talk: Convective thermal management and flow control with synthetic jets, Invited seminar at the Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, USA, Jun 4, 2015, 2015, Conference Paper, PUBLISHED
Deirdre M. D'Arcy, Tim Persoons, 'Simulation of dissolution rate profiles of pharmaceutical systems', School of Pharmacy and Pharmaceutical Sciences and Dept. of Mechanical and Manufacturing Engineering, Trinity College Dublin, 2012, -, Software, EXHIBITED
Persoons, T, Invited talk: Application of high dynamic range PIV to heat transfer studies, Invited seminar at the Graduate School of the College of Engineering, Virginia Tech, Blacksburg, VA, USA, 18 Jul 2011, 2011, Conference Paper, PUBLISHED
Persoons, T, Invited talk: Application of high dynamic range PIV to heat transfer studies with flow unsteadiness, Invited seminar at the Graduate School of the George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA, 20 May 2011, 2011, Conference Paper, PUBLISHED
Baelmans, M and Persoons, T, Invited talk: Microchannel applications for heat sinks and compact heat exchangers, ERCOFTAC Technology Awareness: 2nd Industrial Seminar, Eindhoven, The Netherlands, 11 Nov 2009, 2009, Conference Paper, PUBLISHED
Persoons, T, Invited talk: Overview and selected results of jet impingement heat transfer research at Trinity College Dublin, Invited seminar at the Graduate School of the Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague, Czech Republic, 30 Nov 2009, 2009, Conference Paper, PUBLISHED

  

Award Date
Fellow of Trinity College Dublin Apr 2020
Visiting Faculty, NSF I/UCRC Cooling Technologies Research Center, School of Mechanical Engineering, Purdue University, West Lafayette, IN, USA Jan 2012
Visiting Lecturer, Department of Mechanical Engineering, KU Leuven Sep 2009
2014 Teaching Innovation Award (Faculty of Engineering, Mathematics and Science, Trinity College Dublin) June 2014
2014 Christoffel Plantin Prize (nominee for Ireland by Belgian Ambassador) May 2014
2013 Hartnett-Irvine Award, International Centre for Heat and Mass Transfer (ICHMT) June 2014
Senior Research Fellow, Trinity College Dublin Feb 2012
Marie Curie International Mobility Fellowship of the Irish Research Council, hosted by School of Mechanical Engineering, Purdue University (2010-2013) Aug 2010
Postdoctoral Fellowship of the Irish Research Council for Science, Engineering and Technology (IRCSET) in Trinity College Dublin (2008-2010) Aug 2008
My research since 2013 has centred on multi-scale convective heat transfer for thermal management of electronics systems. This is underpinned by my expertise in experimental fluid dynamics, developed during my Ph.D. work in KU Leuven and my postdoc career in TCD and Purdue University. The focus on electronics cooling is inspired by (i) the rapidly growing energy use of electronics systems and data centres, (ii) the need to better integrate these with our energy system, e.g., through waste heat recuperation, and (iii) the interdisciplinary R&D effort needed to accomplish this - requiring collaboration between thermal fluid science and electronic engineers, as well as more effective knowledge transfer between industry and academia.

Since 2013, I have supervised an active team of an average of 5 PhD students and 3 postdoctoral researchers. A lot of early work went into the fundamentals of heat transfer enhancement with flow unsteadiness (pulsating flow, synthetic jets) and its use in confined geometries, like those in electronics systems. Because of the analogies with aerodynamic flow control, we applied similar techniques to active flow control with applications in renewable power generation.

My research has a strong experimental focus requiring high spatial and temporal resolution measurements of flow and thermal quantities using advanced techniques (e.g., particle image velocimetry (PIV), infrared thermography, constant temperature anemometry). Along the way, we developed new and improved measurement techniques (e.g., high dynamic range PIV) and gradually expanded our expertise to include advanced computational modelling and numerical optimisation.

My team is now internationally recognised for novel research on data centre thermal management and convective flow control, and is firmly embedded in multiple SFI research collaborations (CONNECT, ESIPP, SSPC, MaREI) and closely engaged with academic and industry leaders in the field, through my links with CTRC in Purdue and editorial roles in top journals in the field of electronics cooling.