多维流动湍流代数应力模型的比较

Comparisons between turbulence algebraic stress models for numerical simulation of fluid flows

介绍了湍流传统代数应力模型和作者新建的代数应力模型的基本思想．用ｋ－ε模型和传统的及新的代数应力模型进行了多维数值计算，比较了正应力分量的各向异性和宏观湍流速度场．计算结果表明，三种湍流模型之间存在明显差异，新的代数应力模型显示具有一定的优越性．

The traditional algebraic stress model and the new model developed by the author for the simulation of turbulent flows are presented. The calculation results obtained by means of the k ε model and both kinds of the algebraic stress models mentioned above have been compared and the considerable differences in Reynolds normal stress components and the velocity fields between these models are shown.