Flow patterns and dissipation of turbulent kinetic energy in near-wall turbulence  

作　　者：Zhaoshun Zhang Bing Ma Guixiang Cui Chunxiao Xu 

机构地区：[1]Tsing Hua Univ, Dept Engn Mech, Beijing 100084, Peoples R China

出　　处：《Chinese Science Bulletin》1998年第2期117-120,共4页

基　　金：theNationalNaturalScienceFoundationofChina (GrantNo .195 72 0 41)andtheLaboratoryofNonlinearMechanicsofChineseAcademyofSciences

摘　　要：It is disclosed the flow patterns of turbulent flows in near wall region by means of topological analysis. It has found that there exists a close relationship between the topological characteristics and the spikes which are dominated by the strong normal velocity fluctuations near the wall. It is also shown that the dissipation of turbulent kinetic energy is closely related to the spike events.It is disclosed the flow patterns of turbulent flows in near wall region by means of topological analysis. It has found that there exists a close relationship between the topological characteristics and the spikes which are dominated by the strong normal velocity fluctuations near the wall. It is also shown that the dissipation of turbulent kinetic energy is closely related to the spike events.

关 键 词：wall TURBULENCE DISSIPATION of TURBULENT KINETIC energy TOPOLOGICAL analysis of flows. 

分 类 号：O357[理学—流体力学]