| 扁管管片式散热器中马蹄形涡的数值模拟 |
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| 引用本文： | 樊菊芳,孙东亮,王良璧. 扁管管片式散热器中马蹄形涡的数值模拟[J]. 工程热物理学报, 2004, 0(Z1) |
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| 作者姓名： | 樊菊芳 孙东亮 王良璧 |
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| 作者单位： | [1]兰州交通大学机电工程学院 [2]兰州交通大学机电工程学院 甘肃兰州 [3]甘肃兰州 |
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| 摘 要： | 本文通过数值模拟的方法对扁管管片式散热器中的流场、涡量场、速度环量、 Nu数、马蹄形涡进行了模拟。在Re=1450时,对马蹄形涡的形成、发展、衰减进行了模拟。对在Re=1050时平均Nu数在流动方向的分布,与横断面上速度环量在流动方向的分布进行了比较分析,得出在扁管管片式散热器中决定换热能力的物理量-速度环量。
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| 关 键 词： | 数值模拟 涡量 速度环量 马蹄形涡 涡产生器 |
NUMERICAL INVESTIGATION OF THE HORSE SHOE VORTICES IN THE FIN-AND-FLAT TUBE BANK HEAT EXCHANGER |
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| FAN Ju-Fang SUN Dong-Liang WANG Liang-Bi. NUMERICAL INVESTIGATION OF THE HORSE SHOE VORTICES IN THE FIN-AND-FLAT TUBE BANK HEAT EXCHANGER[J]. Journal of Engineering Thermophysics, 2004, 0(Z1) |
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| Authors: | FAN Ju-Fang SUN Dong-Liang WANG Liang-Bi |
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| Abstract: | The flow field, vorticity field, velocity circulation, Nusselt number and the horse shoe vortices in the fin-and-flat tube bank heat exchanger have been investigated by numerical analysis. The formation, development and disappearance of the horse shoe vortices have been simulated for Re - 1045. Comparing the span-averaged Nusselt number and velocity circulation for Re=l050, we found that the velocity circulation determined the heat transfer enhancement of the fin-and-flat tube bank heat exchanger. |
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| Keywords: | numerical analysis vorticity velocity circulation the horse shoe vortices vortex gen-erator |
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