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肋片对圆环通道内超临界水传热特性影响的数值分析 被引量:1

Numerical Simulation of Supercritical Water Heat Transfer Characteristics in Annular Channel
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摘要 以计算流体力学(CFD)商业软件CFX为计算平台,对圆环通道内超临界水(SCW)的传热特性进行数值模拟。通过对几种湍流模型的对比,选取对超临界条件适用性相对较好的SST模型进行计算;比较光滑圆环通道与带肋片圆环通道内的壁温分布及传热系数的变化;研究肋片形状、高度、间距及宽度等因素对传热特性的影响。结果表明:圆环通道内肋片的存在会导致局部传热强化;在本文计算的尺寸范围内,肋片形状和宽度对传热的影响很小;一定范围内,增加肋片高度以及减小肋片间距都有利于传热强化。 以计算流体力学(CFD)商业软件CFX为计算平台,对圆环通道内超临界水(SCW)的传热特性进行数值模拟。通过对几种湍流模型的对比,选取对超临界条件适用性相对较好的SST模型进行计算;比较光滑圆环通道与带肋片圆环通道内的壁温分布及传热系数的变化;研究肋片形状、高度、间距及宽度等因素对传热特性的影响。结果表明:圆环通道内肋片的存在会导致局部传热强化;在本文计算的尺寸范围内,肋片形状和宽度对传热的影响很小;一定范围内,增加肋片高度以及减小肋片间距都有利于传热强化。
出处 《核动力工程》 EI CAS CSCD 北大核心 2012年第S1期41-44,共4页 Nuclear Power Engineering
关键词 超临界水 圆环通道 传热 肋片 数值模拟 Supercritical water Annular channel Heat transfer Ribs Numerical simulation
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参考文献3

  • 1程旭,刘晓晶.超临界水冷堆国内外研发现状与趋势[J].原子能科学技术,2008,42(2):167-172. 被引量:45
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