| 微小矩形通道内流动与换热特性 |
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| 引用本文： | 孟繁鑫,张大林.微小矩形通道内流动与换热特性[J].南京航空航天大学学报,2009,41(3). |
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| 作者姓名： | 孟繁鑫 张大林 |
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| 作者单位： | 南京航空航天大学航空宇航学院,南京,210016 |
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| 摘 要： | 采用试验和数值模拟方法研究了当量直径为0.633～1.079 mm的微小通道内的流动与换热特性.工质为 液体水,雷诺数Re为100~3 000.试验结果表明,该尺寸范围的通道内层流向紊流转变的临界雷诺数约为1700,层流表观阻力系数和努塞尔数的试验值与数值计算结果吻合良好.最后通过数值模拟对恒定泵功及恒定流 量条件下不同结构参数通道的换热进行了计算,给出了最佳换热结构.
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| 关 键 词： | 微通道 电子设备冷却 换热 数值模拟 |
Flow and Heat Transfer Characteristics in Small Rectangle Channels |
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| Meng Fanrin,Zhang Dalin.Flow and Heat Transfer Characteristics in Small Rectangle Channels[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(3). |
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| Authors: | Meng Fanrin Zhang Dalin |
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| Institution: | College of Aerospace Engineering;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China |
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| Abstract: | Flow and heat transfer characteristics in small rectangle channels with equivalent diameter from 0.633 mm to 1.079 mm are studied both experimentally and numerically.The liquid water is used as a work fluid with the Reynolds number 100 to 3 000.Experimental results show that transition from laminar to turbulent flow is occurred at critical Reynolds numbers about 1 700 in small channels of the dimensions.Experimental values of laminar apparent friction coefficient and Nusselt number are in good agreement wit... |
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| Keywords: | microchannels electronic equipment cooling heat transfer numerical simulation |
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