Transient response of Reynolds stress transport to opposition control in turbulent channel flow

被引：5
|
作者：
Ge MingWei [1 ]
Xu ChunXiao [1 ]
Cui GuiXiang [1 ]
机构：
[1] Tsinghua Univ, Sch Aerosp, Beijing 100084, Peoples R China
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2011年 / 54卷 / 02期
基金：
中国国家自然科学基金;
关键词：
opposition control; drag reduction; Reynolds stress transport; turbulence; WALL-BOUNDED FLOWS; DRAG REDUCTION; SKIN FRICTION;
D O I：
10.1007/s11433-010-4206-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The mechanism for turbulence suppression by opposition control developed by Choi is studied via the analysis of Reynolds stress transport in the initial period of control. It is found that the pressure-strain and pressure-diffusion terms first break up the balance in vertical normal Reynolds stress transport, and result in the final global suppression of turbulence intensities. The transient growth in spanwise normal Reynolds stress is also caused by the pressure-strain term.
引用
收藏
页码：320 / 328
页数：9
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