| 复合肋套管导热和对流耦合换热的数值模拟 |
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| 引用本文： | 刘明会,杨茉,徐之平,卢玫,章立新,余敏.复合肋套管导热和对流耦合换热的数值模拟[J].工程热物理学报,2005,26(1):98-100. |
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| 作者姓名： | 刘明会 杨茉 徐之平 卢玫 章立新 余敏 |
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| 作者单位： | 上海理工大学动力工程学院,上海,200093 |
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| 基金项目： | 中国博士后科学基金;上海市学科建设项目 |
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| 摘 要： | 在层流范围内,数值模拟了带均布纵肋同心套管内的三维导热和对流耦合换热。结果表明间壁温度沿管长变化 较大且分布呈非线性变化;在通道人口流体内部温度和速度分布呈现层流附面层特征,换热的入口段比例随Re增大而加 大,入口段换热的Nu也随Re增大而加大;换热的Nu随管长增加趋于不变。
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| 关 键 词： | 三维导热和对流耦合换热 数值模拟 带纵肋的同心套管 |
| 文章编号： | 0253-231X(2005)01-0098-03 |
| 修稿时间： | 2003年12月13 |
NUMERICAL SIMULATION FOR CONJUGATED HEAT TRANSFER IN A CONCENTRIC TUBE RECUPERATOR WITH LONGITUDINAL FINS |
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| LIU Ming-Hui,YANG Mo,XU Zhi-Ping,LU Mei,ZHANG Li-Xin,YU Min.NUMERICAL SIMULATION FOR CONJUGATED HEAT TRANSFER IN A CONCENTRIC TUBE RECUPERATOR WITH LONGITUDINAL FINS[J].Journal of Engineering Thermophysics,2005,26(1):98-100. |
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| Authors: | LIU Ming-Hui YANG Mo XU Zhi-Ping LU Mei ZHANG Li-Xin YU Min |
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| Abstract: | A numerical simulation is performed for the three-dimensional laminar conjugated heat transfer in a concentric tube recuperator with longitudinal fins. The numerical results show that the mean temperature along the longitudinal wall is nonlinear function, and laminar boundary characteristics are displayed for the distributions of velocity and temperature in the fluid. As Re increases ,the ratio of entrance distance to the length of tube increases, and the Nusselt number also increases in the entrance region. As the length of tube grows, the Nusselt numbers trend to a constant remarkably. |
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| Keywords: | 3D conjugated heat transfer numerical simulation concentric tube with longitudinal fins |
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