| 变物性对有凸出热源通道换热计算的影响 |
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| 引用本文： | 王涵,夏新林.变物性对有凸出热源通道换热计算的影响[J].节能技术,2011,29(2):129-133. |
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| 作者姓名： | 王涵 夏新林 |
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| 作者单位： | 哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 本文基于一侧含有三个均匀分布的凸出热源竖壁、另一侧为绝热竖壁的二维垂直换热通道，研究了物性变化相比于常物性和Boussinesq假设对通道内最大温度和平均Nu数的影响。通过网格无关性验证，证实了计算程序的有效性，并修正了无量纲最大温度的公式为幂函数形式。计算结果验证了，在Gr〉7．5×10。时，变物性对非对称通道换热的必要性。
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| 关 键 词： | 变物性 耦合传热 自然对流 凸出热源 二维通道 |
Influence of Variable Property Effects on Heat Transfer in an Channel with Discrete Protruded Heat Sources |
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| WANG Han,XIA Xin-lin.Influence of Variable Property Effects on Heat Transfer in an Channel with Discrete Protruded Heat Sources[J].Energy Conservation Technology,2011,29(2):129-133. |
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| Authors: | WANG Han XIA Xin-lin |
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| Affiliation: | WANG Han,XIA Xin-lin(College of Energy Science Engineering,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | Based on the laminar air flow induced by natural convection in a two-dimensional vertical channel with one adiabatic wall and three discrete protruded sources,the influence of variable property effects to the numerical results which included maximum temperature and average Nu value are compared with those obtained from an alternative model in which all thermophysical properties are assumed to be constant and the Boussinesq approximation is used.Through the grid test,the reliability of the numerical caculati... |
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| Keywords: | variable property effects conjugate heat transfer natural convection protruded heat sources two-dimensional channel |
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