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上海电力大学学报:2018,34(2):111-114
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流体横掠圆柱体传热特性数值模拟的流态模型选择
(上海电力学院 能源与机械工程学院)
Selection of Flow Model for Numerical Simulation of Heat Transfer Characteristics of Fluid Swept Cylinder
(School of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China)
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投稿时间:2018-01-19    
中文摘要: 采用层流模型、标准k-ε紊流模型、RNG k-ε紊流模型,对亚临界雷诺数条件下(Re=300~300 000)的二维圆柱扰流进行了数值模拟与仿真,得到了圆柱壁面平均努塞尔数随雷诺数变化的规律。并得出结论:当Re≤3 900时,采用层流模型较合适;当3 900≤Re≤22 000范围内时,采用标准k-ε紊流模型较合适;当22 000≤Re≤300 000时,采用RNG k-ε紊流模型较合适。
Abstract:Laminar flow model,standard k-epsilon and RNG k-epsilon turbulence model are used to simulate the flow around two-dimensional circular cylinder under the condition of subcritical Reynolds number(Re=300~300 000).It is concluded that the laminar flow model is more suitable when Re ≤ 3 900;when 3 900 ≤ Re ≤ 22 000,the standard k-ε model is more suitable.When 22 000 ≤ Re ≤ 3×105,the RNG k-ε model is more suitable.
文章编号:20182003     中图分类号:    文献标志码:
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引用文本:
樊鹏远,李永光.流体横掠圆柱体传热特性数值模拟的流态模型选择[J].上海电力大学学报,2018,34(2):111-114.
FAN Pengyuan,LI Yongguang.Selection of Flow Model for Numerical Simulation of Heat Transfer Characteristics of Fluid Swept Cylinder[J].Journal of Shanghai University of Electric Power,2018,34(2):111-114.