Mechanism for strong normal velocity fluctuations in viscous sublayer  

作　　者：许春晓 F.T.M.Nieuwstadt 张兆顺 

机构地区：[1]Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China [2]Lab for Aero- and Hydro-dynamics,Faculty of Mechanical Engineering and Marine Technology, Technical University of Delft, Netherlands

出　　处：《Science China Mathematics》1996年第5期520-527,共8页中国科学：数学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China.

摘　　要：The spike phenomena,namely strong normal velocity fluctuations,in the viscous sublayer have been discovered through detailed investigation of the databank of the direct numerical simulation of a turbulent channel flow.Their characteristic features are disclosed and their effects on the generation of turbulence,and correlation with the vortex structures are studied.The spike phenomena,namely strong normal velocity fluctuations,in the viscous sublayer have been discovered through detailed investigation of the databank of the direct numerical simulation of a turbulent channel flow.Their characteristic features are disclosed and their effects on the generation of turbulence,and correlation with the vortex structures are studied.

关 键 词：VISCOUS sublayer SPIKE turbulence. 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]