Turbulent boundary-layer control with plasma spanwise travelling waves

被引：36

作者：

Whalley, Richard D. ^{[1
]}

Choi, Kwing-So ^{[1
]}

机构：

[1] Univ Nottingham, Fac Engn, Nottingham NG7 2RD, England

来源：

EXPERIMENTS IN FLUIDS | 2014年 / 55卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

DRAG-REDUCTION; CHANNEL FLOW; NUMERICAL-SIMULATION; STREAMWISE VORTICES; SKIN FRICTION; MECHANISMS; MOTIONS; VORTEX;

D O I：

10.1007/s00348-014-1796-3

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Arrays of dielectric-barrier-discharge plasma actuators have been designed to generate spanwise travelling waves in the turbulent boundary layer for possible skin-friction drag reductions. Particle image velocimetry was used to elucidate the modifications to turbulence structures created by the plasma spanwise travelling waves. It has been observed that the plasma spanwise travelling waves amalgamated streamwise vortices, lifting low-speed fluid from the near-wall region up and around the peripheries of their cores to form wide ribbons of low-speed streamwise velocity within the viscous sublayer.

引用

页数：16

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