ON THE PERTURBATION EQUATION OF NAVIER-STOKES EQUATION

被引：1

作者：

Gao Ge (Beijing Univisit of Aeronautics and Astonauttcs)

机构：

来源：

航空动力学报 | 1989年 / 02期

关键词：

ON THE PERTURBATION EQUATION OF NAVIER-STOKES EQUATION;

D O I：

10.13224/j.cnki.jasp.1989.02.022

中图分类号：

学科分类号：

摘要：

<正> The perturbation equation of the Navier-Stokes equation is obtained by superimposing a noise field on to a flow field. Because of the interaction between viscosity and the perturbation displacement,the equation simultaneously the properties of dissipation and dispersion. It reveals the following important physical features of turbulence: the mechanism of transition and intermittency, which arises from a composite spatio-temporai instability mainly due to the interaction between viscosity and positive dispersion; and the relationship between negative dispersion and turbulent energy inversion.

引用

页码：189 / 192

页数：4