摘要
简述了湍流度对边界层及近场尾流时均特性和边界层转捩位置的影响，讨论了流向和法向湍流特性分布规律，并着重分析了湍流度对法向湍流特性的影响。结果表明，法向湍流强度及雷诺正应力沿流向分段性更为明显，且法向与流向湍流参量之比的特征值有一定规律性。
This paper decribes the effect of turbulence level on the time average characteristics of the boundary layer and near wake of an airfoil and the transition point of the boundary layer.The distributions of turbulence characteristics in normal and stream direction are discussed.The effect of turbulence on the normal turbulence characteristics is also analyzed.Test results has shown,the different region of the normal turbulent intensity and normal Reynolds stress in stream direction is obvious,and the ratio of normal and stream turbulent quantity has a certain rule.
出处
《流体力学实验与测量》
CSCD
1998年第4期31-35,共5页
Experiments and Measurements in Fluid Mechanics
基金
国防基金资助项目
关键词
翼型
尾流
边界层
变湍流度
湍流特性
airfoil
wake
boundary layer
varying turbulence
turbulence characteristics
