The three-dimensional forced convective heat transfer in a bi-porous metal foam heat sink is numerically investigated. Each of the metal foam layers has a distinct thickness, porosity, and pore density. The effects of these geometrical and morphological parameters on fluid flow and heat transfer are analyzed by employing the Forchheimer-Brinkman extended Darcy momentum equation and local thermal non-equilibrium energy equation. The numerical results show that the thermal resistance of the bi-porous metal foam heat sink is decreased with reduction in top layer metal foam porosity, as well as the bottom layer metal foam thickness, for a fixed bottom metal foam porosity of 0.9. The best thermal performance is achieved by employing a 30PPI metal foam at the bottom layer, and a 50PPI metal foam at the top layer. The optimal thickness of the bottom foam layer is about 1mm.
- Heat Transfer Division
Thermal Performance Analysis of Bi-Porous Metal Foam Heat Sink
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Li, Y, Gong, L, Xu, M, & Joshi, Y. "Thermal Performance Analysis of Bi-Porous Metal Foam Heat Sink." Proceedings of the ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer. Volume 2: Micro/Nano-Thermal Manufacturing and Materials Processing; Boiling, Quenching and Condensation Heat Transfer on Engineered Surfaces; Computational Methods in Micro/Nanoscale Transport; Heat and Mass Transfer in Small Scale; Micro/Miniature Multi-Phase Devices; Biomedical Applications of Micro/Nanoscale Transport; Measurement Techniques and Thermophysical Properties in Micro/Nanoscale; Posters. Biopolis, Singapore. January 4–6, 2016. V002T11A027. ASME. https://doi.org/10.1115/MNHMT2016-6707
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