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脉动压力脉动速度变形平均项的表达式

林多敏 蔡树棠

林多敏, 蔡树棠. 脉动压力脉动速度变形平均项的表达式[J]. 应用数学和力学, 1991, 12(9): 777-785.
引用本文: 林多敏, 蔡树棠. 脉动压力脉动速度变形平均项的表达式[J]. 应用数学和力学, 1991, 12(9): 777-785.
Lin Duo-min, Cai Shu-tang. Expressions for Pressure-Velocity-Gradient Correlations[J]. Applied Mathematics and Mechanics, 1991, 12(9): 777-785.
Citation: Lin Duo-min, Cai Shu-tang. Expressions for Pressure-Velocity-Gradient Correlations[J]. Applied Mathematics and Mechanics, 1991, 12(9): 777-785.

脉动压力脉动速度变形平均项的表达式

Expressions for Pressure-Velocity-Gradient Correlations

  • 摘要: 脉动压力脉动速度变形平均项,最初是Rotta[21]改写压力梯度做功项得来的.但是,这项处理起来都很困难,从Rotta开始,以后Launder等人都对这项做过一些假定.本文根据脉动速度所满足的方程解出脉动压力,然后进而求出脉动压力乘上脉动速度变形的平均值,得到了脉动压力脉动速度变形平均项的完整表达式.这个表达式说明了Rotta和Launder等人的有限表达式是有一定道理的.本文所得的完整表达式分为两种情形加以讨论.一种是几种涡旋不分开的情形,另一种是三种涡旋分开考虑的情形.由此,本文为雷诺应力模式和三涡旋模式等湍流模式提供了完整的脉动压力脉动速度变形平均项的表达式.
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出版历程
  • 收稿日期:  1990-09-14
  • 刊出日期:  1991-09-15

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