Closed-Loop Flow Control of the Oscillations of a Free-Suspended Cylinder at Low Reynolds Numbers

2016 ◽  
Author(s):  
Adam C. Hillier ◽  
Ori Friedland ◽  
Avi Seifert
Keyword(s):  
Flow Control ◽  
Closed Loop ◽  
Reynolds Numbers ◽  
Low Reynolds Numbers ◽  
Low Reynolds

Research of the suction flow control on wings at low Reynolds numbers

2017 ◽  
Vol 232 (8) ◽  
pp. 1515-1528 ◽  
Author(s):  
Dongli Ma ◽  
Guanxiong Li ◽  
Muqing Yang ◽  
Shaoqi Wang
Keyword(s):  
Flow Control ◽  
Aerodynamic Force ◽  
Separation Bubble ◽  
Reynolds Numbers ◽  
Aerodynamic Characteristics ◽  
Flow State ◽  
Laminar Separation ◽  
Low Reynolds Numbers ◽  
Low Reynolds ◽  
Suction Flow

Laminar separation and transition have significant effects on aerodynamic characteristics of the wing under the condition of low Reynolds numbers. Using the flow control methods to delay and eliminate laminar separation has great significance. This study uses the method combined with water tunnel test and numerical calculation to research the effects of suction flow control on the flow state and aerodynamic force of the wing at low Reynolds numbers. The effects of suction flow rate and suction location on laminar separation, transition and aerodynamic performance of the wing are further researched. The results of the research show that, the suction can control laminar separation and transition effectively, when the suction holes are in the interior of the separation bubble, and close to the separation point, the suction has the best control effect. When the Reynolds number is Re = 3.0 × 105, the suction flow control can make the lift-to-drag ratio of the wing increase by 8.62%, and the aerodynamic characteristics of the wing are improved effectively.

Open-Loop Flow-Control Investigation for Airfoils at Low Reynolds Numbers

AIAA Journal ◽  
2013 ◽  
Vol 51 (8) ◽  
pp. 1843-1860 ◽  
Author(s):  
C. Brehm ◽  
A. Gross ◽  
H. F. Fasel
Keyword(s):  
Flow Control ◽  
Reynolds Numbers ◽  
Open Loop ◽  
Low Reynolds Numbers ◽  
Low Reynolds

scholarly journals Active Flow Control at Low Reynolds Numbers by Periodic Airfoil Morphing

2016 ◽  
Author(s):  
Gareth R. Jones ◽  
Matthew J. Santer ◽  
George Papadakis ◽  
Marco T. Debiasi
Keyword(s):  
Flow Control ◽  
Active Flow Control ◽  
Reynolds Numbers ◽  
Low Reynolds Numbers ◽  
Low Reynolds ◽  
Active Flow
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