LINEAR INSTABILITY OF TURBULENT BOUNDARY LAYER AS A MECHANISM FOR THE GENERATION OF LARGE SCALE COHERENT STRUCTURES

查看全文 作　　者：[1]吴雪松;[1]周恒 机构地区：[1]Department of Mechanics, Tianjin University 出　　处：《Chinese Science Bulletin》索引1989年第34卷第20期,共4页 基　　金：Project supported by the National Natural Science Foundation of China 摘　　要：I. BASIC IDEA Large eddies in the outer region of a turbulent boundary layer over a flat plate were found to have a mean streamwise extent of 2.5--3.0δ, where δ is the boundary layer thickness. Their convective velocity clusters around a value of 0.8U₀, where U₀ is the free stream velocity, and the period of their passage is roughly 3δ/U₀. 关 键 词：COHERENT structure large EDDY TURBULENT boundary layer