This control scheme offers drag reduction of up to 20%, which is the highest value achieved by existing feedback controls based on the streamwise wall shear ...

This control scheme offers drag reduction of up to 20%, which is the highest value achieved by existing feedback controls based on the streamwise wall shear ...

ABSTRACT. Direct numerical simulation (DNS) of a turbulent channel flow is performed in order to explore the possibility of reducing wall friction drag and ...

Feb 3, 2010 · in order to explore the possibility of reducing wall friction drag and saving energy through damping of the spanwise velocity fluctuation.

A novel control loop is proposed based on the upstream streamwise wall shear stress. This control scheme enables drag reduction of up to 20% while energy input ...

This control scheme offers drag reduction of up to 20%, which is the highest value achieved by existing feedback controls based on the streamwise wall shear ...

Friction drag reduction through damping of the near-wall spanwise velocity fluctuation · International Journal of Heat and Fluid Flow 31(3): 434-441 · 2010 ...

The Reynolds-number dependence of the drag reduction achievable by diminishing to zero the near-wall turbulent velocity fluctuations is clarified.

The unsteady cross-flow straining is shown to cause major spanwise distortions in the streak near-wall structures, leading to a pronounced reduction in the wall ...