Turbulent Boundary Layer Control via a Streamwise Travelling Wave Induced by an External Force

2008 ◽  
Vol 25 (10) ◽  
pp. 3700-3703
Author(s):  
Qin Tong ◽  
Gao Peng ◽  
Liu Nan-Sheng ◽  
Lu Xi-Yun
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
External Force ◽  
Travelling Wave ◽  
Boundary Layer Control ◽  
Wave Induced ◽  
Layer Control

Turbulent boundary-layer control with plasma actuators

2011 ◽  
Vol 369 (1940) ◽  
pp. 1443-1458 ◽  
Author(s):  
Kwing-So Choi ◽  
Timothy Jukes ◽  
Richard Whalley
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Skin Friction ◽  
Control Strategies ◽  
Travelling Wave ◽  
Friction Reduction ◽  
Plasma Actuators ◽  
Control Technique ◽  
Boundary Layer Control ◽  
Layer Control

This paper reviews turbulent boundary-layer control strategies for skin-friction reduction of aerodynamic bodies. The focus is placed on the drag-reduction mechanisms by two flow control techniques—spanwise oscillation and spanwise travelling wave, which were demonstrated to give up to 45 per cent skin-friction reductions. We show that these techniques can be implemented by dielectric-barrier discharge plasma actuators, which are electric devices that do not require any moving parts or complicated ducting. The experimental results show different modifications to the near-wall structures depending on the control technique.

Turbulent boundary layer control utilizing the Lorentz force

2000 ◽  
Vol 12 (3) ◽  
pp. 631-649 ◽  
Author(s):  
Timothy W. Berger ◽  
John Kim ◽  
Changhoon Lee ◽  
Junwoo Lim
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Lorentz Force ◽  
Boundary Layer Control ◽  
Layer Control
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