A Numerical Study of Temporal Mixing Layer with Three-Dimensional Mortar Spectral Element Method  

作　　者：ZHANG Xu LIU Jin-Hong Jonathan W.N 张旭;刘金宏;Jonathan W.N(Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621900;Mechanical Department,University of Wyoming,Laramie,USA)

机构地区：[1]Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621900 [2]Mechanical Department,University of Wyoming,Laramie,USA

出　　处：《Chinese Physics Letters》2011年第6期187-189,共3页中国物理快报（英文版）

基　　金：by the National Natural Science Foundation of China under Grant No 11072226;National Key Laboratory of Defensive Science and Technology Foundation(9140C6710011006);AFOSR of USA(FA9550-05-1-0485).

摘　　要：We investigate a set of well-posed interface conditions of viscous fluxes of Navier–Stokes equations,extend them to three-dimensional Navier–Stokes equations and successfully study a temporally turbulent mixing layer.The evolution of a large vortex structure and the non-dimensional statistical quantities in the mixing layer are numerically analyzed.The span-wise energy spectrum of the mixing layer exhibits wide band features,which means that the simulation generates the desired amount of small scales.These results show that too many small scales are present due to insufficient dissipation and the amount of large scales is low,indicating too much dissipation for large-scale structures.

关 键 词：layer MIXING DISSIPATION 

分 类 号：O35[理学—流体力学]