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Received:January 19, 2018
Received:January 19, 2018
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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