The Effect of Mach Number on Turbulence Behaviors in Compressible Boundary Layers

作     者：WANG Li LU Xi-Yun 汪利;陆夕云

作者机构：Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei 230026 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2011年第28卷第6期

页      面：190-193页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：by the National Natural Science Foundation of China(No 11072236) the 111 Project(No B07033) the Funda-mental Research Funds for the Central Universities(No WK2090050007) 

主　　题：turbulent turbulence quantities 

摘      要：The effects of Mach number on turbulence behaviors are investigated by means of direct numerical simulation of compressible turbulent boundary layers with the free-stream Mach numbers 2,4 and *** typical turbulent quantities,including the velocity and vorticity fluctuations,intermittency,sweep and ejection events and turbulent kinetic energy budget,are *** turbulence intensities are significantly decreased with the increasing Mach *** onset of intrinsic intermittency occurs nearer the wall for a higher Mach *** ejection event is more frequent and the sweep event becomes less ***,the magnitudes of turbulent kinetic energy production,diffusion and transport terms are increased and the solenoidal dissipation is slightly decreased as the Mach number is increased.