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3D analytical modelling of plate fin heat sink on forced convection

Author

Listed:
  • Castelan, A.
  • Cougo, B.
  • Dutour, S.
  • Meynard, T.

Abstract

With the development of embedded systems, it is crucial to reduce weight of equipments. In power converter, heat sink is a heavy part that often can be reduced in volume and weight. There are several models and methods to calculate a heat sink thermal resistance. However the more precise these methods are, the more time consuming they are and thus they can be hardly integrated in a weight optimization routine. Using analytical models to calculate heat sink thermal resistance is a good compromise between execution time and precision of results. They are usually one-dimensional models which are simple but do not take into account heat spreading effects, which is important when power electronic heat sources are small compared to their heat sink. This paper describes a three-dimensional analytical model of forced convection plate fin heat sink, which will be compared with numerical simulation. A maximum difference of 1.4°C has been observed between the mean ΔT of the models. This analytical model will be used in an optimization routine to reduce the weight of an existing heat sink in order to show that fast and precise optimization of cooling system is possible with analytical models.

Suggested Citation

  • Castelan, A. & Cougo, B. & Dutour, S. & Meynard, T., 2019. "3D analytical modelling of plate fin heat sink on forced convection," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 158(C), pages 296-307.
    • Handle: RePEc:eee:matcom:v:158:y:2019:i:c:p:296-307
    DOI: 10.1016/j.matcom.2018.09.011
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