【摘 要】
：
Turbulent open channel flows subjected to the control of a spanwise traveling wave have been investigated by means of Direct Numerical Simulation(DNS).The objec
【机 构】
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Department of Modern Mechanics
【基金项目】
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国家自然科学基金;the Anhui Provincial Excellent Young Scholars Foundation;the Program for Cheung Kong Scholars and Innovative Research Team in the University;the Science and Technology Innovative Foundation o
论文部分内容阅读
Turbulent open channel flows subjected to the control of a spanwise traveling wave have been investigated by means of Direct Numerical Simulation(DNS).The objective of this study is to reveal the response of the near-wall and surface-influenced turbulence to the spanwise traveling wave control.Three typical frequencies of the spanwise traveling wave,i.e.,high-,middle-and low-frequency,corresponding to the exciting periods at 25,50 and 100,are considered to study the turbulence dynamics in the wall and surface regions.To elucidate the behaviors of turbulence statistics,some typical quantities,including the mean velocity,velocity fluctuations and the structures of turbulence fluctuations,are exhibited and analyzed.
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