Topology optimisation of passive coolers for light-emitting diode lamps

Joe Alexandersen

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Abstract

This work applies topology optimisation to the design of passive coolers for light-emitting diode (LED) lamps. The heat sinks are cooled by the natural convection currents arising from the temperature difference between the LED lamp and the surrounding air. A large scale parallel computational framework is used to perform topology optimisation for minimising the temperature of the LED package subjected to highly convection-dominated heat transfer. The governing equations are the steady-state incompressible Navier-Stokes equations coupled to the thermal convection-diffusion equation through the Bousinessq approximation. The fully coupled non-linear multiphysics system is discretised using stabilised trilinear equal-order finite elements and solved using Newtons method and a multigrid-preconditioned iterative method. Topology optimisation is carried out using the density-based approach. The optimisation results show interesting features that are currently being incorporated into industrial designs for enhanced passive cooling abilities.
Original languageEnglish
Title of host publicationProceedings of WCSMO-11
Number of pages5
Publication date2015
Publication statusPublished - 2015
Event11th World Congress of Structural and Multidisciplinary Optimization - University of Sydney, Sydney , Australia
Duration: 7 Jun 201512 Jun 2015
http://www.aeromech.usyd.edu.au/WCSMO2015/index.html

Conference

Conference11th World Congress of Structural and Multidisciplinary Optimization
LocationUniversity of Sydney
CountryAustralia
CitySydney
Period07/06/201512/06/2015
Internet address

Keywords

  • Topology optimisation
  • Passive cooler
  • LED lamp
  • Heat sink design
  • Natural convection

Cite this

Alexandersen, J. (2015). Topology optimisation of passive coolers for light-emitting diode lamps. In Proceedings of WCSMO-11