Numerical studies on evolution of secondary streamwise vortices in transitional boundary layers

被引：0

作者：

陈林 ^{[1
]}

唐登斌 ^{[1
]}

刘超群 ^{[2
]}

机构：

[1] Department of Aerodynamics,Nanjing University of Aeronautics and Astronautics

[2] Department of Mathematics,University of Texas at Arlington

来源：

AppliedMathematicsandMechanics(EnglishEdition) | 2011年 / 32卷 / 04期

基金：

中国国家自然科学基金;

关键词：

secondary streamwise vortex; boundary layer; transition; direct numerical simulation;

D O I：

暂无

中图分类号：

O357.5 [湍流（紊流）];

学科分类号：

080103 ; 080704 ;

摘要：

Formation and evolution of secondary streamwise vortices in the compressible transitional boundary layers over a flat plate are studied using a direct numerical simulation method with high-order accuracy and highly effective non-reflecting characteristic boundary conditions.Generation and development processes of the secondary streamwise vortices in the complicated transitional boundary flow are clearly analyzed based on the of numerical results,and the effects on the formation of the ring-like vortex that is vital to the boundary layer transition are explored.A new mechanism forming the ring-like vortex through the mutual effect of the primary and secondary streamwise vortices is expressed.

引用

页码：449 / 458

页数：10

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