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82 |
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Name： |
Tzer-Ming Jeng, Sheng-Chung Tzeng, Yu-Xiang Huang, Wei-Yi Chen |
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Effect of confinement on cooling performance of a power system with the rotating Al-foam cylinder under the impinging jet |
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Keywords：heat transfer, rotating porous cylinder, impinging jet, confined/unconfined conditions |
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Abstract：This work experimentally investigated the heat transfer of a rotating porous cylinder under a circular impinging jet at the confined/unconfined conditions. The 0.90-porosity aluminum foams used. Air was employed as the coolant. Relevant parameters included the rotational Reynolds number, the jet Reynolds number and the relative impinging height. The results show the effect of confinement on the average Nusselt number of the Al-foam cylinder under the impinging jet for various parameters at the pure rotating condition, the pure jet-flow condition and the combined condition of the rotation and jet flow. They can be used to improve the cooling design of power-electronics systems. |
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