Communication Dans Un Congrès Année : 2022

Numerical and experimental visualization of natural convection around a LED dissipator

Résumé

Thermal management of light-emitting diodes (LEDs) for lighting is essential to ensure better performance since 7%-85% of its injected power is converted into heat. To increase the heat transfer rate, a heat sink is used to facilitate the natural convection heat transfer phenomenon. Thus, visualization of thermal flow around its heat sink is a powerful technique for developing conceptual models. In this paper, we compare the numerical results found by simulation with Comsol Multiphysics® using a rectangular heat sink with experimental visualization of the natural convection obtained by Schlieren imaging technique and then processed by Matlab®. Results show that this optical technique can be a promising technology to quantify thermal properties of the light source.

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Dates et versions

hal-03861691 , version 1 (20-11-2022)

Identifiants

  • HAL Id : hal-03861691 , version 1

Citer

Zouhour Araoud, Laurent Canale, Khaoula Ben Abdelmalek, Mohamed Ridha Kouki, Kamel Charrada, et al.. Numerical and experimental visualization of natural convection around a LED dissipator. 2021 Joint Conference - 11th International Conference on Energy Efficiency in Domestic Appliances and Lighting & 17th International Symposium on the Science and Technology of Lighting (EEDAL/LS:17), Jun 2022, Toulouse, France. pp.1-4. ⟨hal-03861691⟩
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