Prediction of skin-friction reduction by opposition control in turbulent channel flow

【Author】

Bingqing Deng;Chunxiao Xu;Weixi Huang;Guixiang Cui;

【Abstract】

<正>A strengthened opposition control scheme to achieve turbulence drag reduction is proposed and tested in turbulent channel flow at friction Reynolds number 180 by direct numerical simulation. By enhancing the control input when the detection position is less than 20 wall units,a drag reduction rate up to 34%can be

【Keywords】

Prediction of skin-friction reduction by opposition control in turbulent channel flow;

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