| 流向对管束外混合对流影响的数值模拟 |
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| 引用本文： | 王秋香,戴传山,李琪.流向对管束外混合对流影响的数值模拟[J].工程热物理学报,2011(7). |
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| 作者姓名： | 王秋香 戴传山 李琪 |
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| 作者单位： | 天津大学机械学院热能系地热中心; |
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| 基金项目： | 天津市科委重点基金资助项目(No.08JCZDC20300) |
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| 摘 要： | 用格子玻尔兹曼方法对微圆管管束外混合对流的换热情况进行了数值模拟研究。在充分验证程序正确性的基础上,对混合流动绕流时不同壳侧进液角度,不同雷诺数Re以及瑞利数Ra等方面对传热的影响进行模拟研究,对衡量传热效果的Nu数及温度场进行了对比,总结出了换热规律。为高效微管换热器的开发提供了理论指导。
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| 关 键 词： | 格子Boltzmann 混合对流 自然对流 管束 |
Numerical Simulation on the Influence of Flow Direction for Mixed Convection Across a Tube Bundle |
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| WANG Qiu-Xiang DAI Chuan-Shan LI Qi.Numerical Simulation on the Influence of Flow Direction for Mixed Convection Across a Tube Bundle[J].Journal of Engineering Thermophysics,2011(7). |
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| Authors: | WANG Qiu-Xiang DAI Chuan-Shan LI Qi |
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| Institution: | WANG Qiu-Xiang DAI Chuan-Shan LI Qi (School of Mechanical Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | The influence of flow direction on heat transfer of mixed convection fluid flowing across a tube bundle was simulated using Lattice Boltzmann Method.The correctness of our program was fully verified firstly.Then several influential factors for the overall heat transfer of the tube bundle was investigated,such as the installation angles for the liquid pipe of MTHE shell side,Reynolds numbers and Rayleigh number.The averaged Nusselt numbers and temperature fields for various situations were compared.The effec... |
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| Keywords: | lattice Boltzmann method mixed convection nature convection tube bundle |
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