Three-dimensional numerical simulation of heat and fluid flow in noncircular microchannel heat sinks |
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Authors: | Yongping Chen Chengbin Zhang Mingheng Shi Jiafeng Wu |
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Affiliation: | aSchool of Energy and Environment, Southeast University, Nanjing 210096, PR China |
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Abstract: | A three-dimensional model of heat transfer and fluid flow in noncircular microchannel heat sinks is developed and analyzed numerically. It is found that Nusselt number has a much higher value at the inlet region, but quickly approaches the constant fully developed value. The temperature in both solid and fluid increases along the flow direction. In addition, the comparison of thermal efficiencies is conducted among triangular, rectangular and trapezoidal microchannels. The result indicates that the triangular microchannel has the highest thermal efficiency. |
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Keywords: | Noncircular microchannel Heat sink Numerical simulation Heat transfer |
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