Evolution of the vortex structures and turbulent spots at the late-stage of transitional boundary layers

被引：7

作者：

Chen Lin ^{[1
]}

Tang DengBin ^{[1
]}

Lu Ping ^{[2
]}

Liu ChaoQun ^{[2
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Dept Aerodynam, Nanjing 210016, Peoples R China

[2] Univ Texas Arlington, Dept Math, Arlington, TX 76010 USA

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2011年 / 54卷 / 05期

关键词：

boundary layers; transition; barrel-shaped vortex; turbulent spots; direct numerical simulation;

D O I：

10.1007/s11433-011-4266-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The nonlinear evolution process of new vortex structures at the late-stage of the transition, including the 3-D spatial structure of barrel-shaped vortex and "dark spots" structure observed by experiment research, has been confirmed by our computational results. The formation mechanisms of these structures have been explored. It is revealed that the new vortex structures, the ring-like vortex chain and induced disturbance velocities play a dominant role in the generation of turbulent spots.

引用

页码：986 / 990

页数：5

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