THEORETICAL INVESTIGATION OF AN EDDY-VISCOSITY-TYPE REPRESENTATION OF THE REYNOLDS STRESS

被引：28

作者：

OKAMOTO, M

机构：

[1] Institute of Industrial Science, University of Tokyo, Tokyo 106, 7-22-1, Roppongi, Minato-ku

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1994年 / 63卷 / 06期

关键词：

EDDY VISCOSITY; 2-SCALE DIRECT-INTERACTION APPROXIMATION (TSDIA); K-EPSILON MODEL; NONLINEAR REYNOLDS STRESS; NONEQUILIBRIUM PROPERTY;

D O I：

10.1143/JPSJ.63.2102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An eddy-viscosity-type representation of the Reynolds stress is investigated with the aid of a two-scale direct-interaction approximation (TSDIA). The second- and third-order analyses of the TSDIA are applied to the Reynolds stress. Using these results, the nonlinear part of the Reynolds stress and the turbulent-energy dissipation rate equation are discussed in detail. Non-equilibrium effects of turbulence are also incorporated into the nonlinear part in addition to the simple eddy-viscosity one. Further, using the experimental data, we confirm that the K-epsilon model is improved by the non-equilibrium property.

引用

页码：2102 / 2122

页数：21

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