Dhinsa, Kulvir K., Bailey, Chris J. ORCID: 0000-0002-9438-3879 and Pericleous, Koulis A. ORCID: 0000-0002-7426-9999 (2004) Turbulence modelling and its impact on CFD predictions for cooling of electronic components. In: The Ninth Intersociety Conference on Thermal and Thermomechanical Phenomena In Electronic Systems (ITHERM 2004) [Proceedings]. Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ, USA, pp. 487-494. ISBN 0780383575 ISSN 1089-9870 (doi:https://doi.org/10.1109/ITHERM.2004.1319214)

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Abstract

This paper will discuss Computational Fluid Dynamics (CFD) results from an investigation into the accuracy of several turbulence models to predict air cooling for electronic packages and systems. Also new transitional turbulence models will be proposed with emphasis on hybrid techniques that use the k-ε model at an appropriate distance away from the wall and suitable models, with wall functions, near wall regions. A major proportion of heat emitted from electronic packages can be extracted by air cooling. This flow of air throughout an electronic system and the heat extracted is highly dependent on the nature of turbulence present in the flow. The use of CFD for such investigations is fast becoming a powerful and almost essential tool for the design, development and optimization of engineering applications. However turbulence models remain a key issue when tackling such flow phenomena. The reliability of CFD analysis depends heavily on the turbulence model employed together with the wall functions implemented. In order to resolve the abrupt fluctuations experienced by the turbulent energy and other parameters located at near wall regions and shear layers a particularly fine computational mesh is necessary which inevitably increases the computer storage and run-time requirements. The PHYSICA Finite Volume code was used for this investigation. With the exception of the k-ε and k-ω models which are available as standard within PHYSICA, all other turbulence models mentioned were implemented via the source code by the authors. The LVEL, LVEL CAP, Wolfshtein, k-ε, k-ω, SST and kε/kl models are described and compared with experimental data.

Item Type:	Conference Proceedings
Title of Proceedings:	The Ninth Intersociety Conference on Thermal and Thermomechanical Phenomena In Electronic Systems (ITHERM 2004) [Proceedings]
Additional Information:	[1] This paper was first presented at the Ninth Intersociety Conference on Thermal and Thermomechanical Phenomena In Electronic Systems (ITHERM 2004) held from 1-4 June 2004 in Las Vegas, Nevada, USA. It was given within Thermal Simulation and Modeling: Part I.
Uncontrolled Keywords:	computational fluid dynamics, CFD, cooling electronics packaging, fluctuations, reliability, shear turbulence
Subjects:	Q Science > QA Mathematics > QA76 Computer software Q Science > QC Physics T Technology > T Technology (General)
Pre-2014 Departments:	School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Mechanics & Reliability Group School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group School of Computing & Mathematical Sciences > Department of Computer Systems Technology School of Computing & Mathematical Sciences > Department of Mathematical Sciences
Related URLs:	Publisher Publisher Organisation
Last Modified:	13 Mar 2019 11:31
URI:	http://gala.gre.ac.uk/id/eprint/777

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