On the Active and Passive Flow Separation Control Techniques over Airfoils

2017 International Conference on Structural, Mechanical and Materials Engineering

材料科学;力学

Moghaddam, Tohid^1 ; Neishabouri, Nafiseh Banazadeh^2

Department of Mechanical Engineering, K. N. Toosi University of Technology, Iran^1

Department of Mechanical Engineering, University of Tulsa, Tulsa

OK

74104, United States^2

关键词: Boundary-layer separation;    Control mechanism;    Flow control methods;    Flow separation control;    Lift to drag ratio;    Point of interest;    Suction and blowing;    Suction flow;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/248/1/012009/pdf
DOI  :  10.1088/1757-899X/248/1/012009

来源: IOP

【 摘 要 】

In the present work, recent advances in the field of the active and passive flow separation control, particularly blowing and suction flow control techniques, applied on the common airfoils are briefly reviewed. This broad research area has remained the point of interest for many years as it is applicable to various applications. The suction and blowing flow control methods, among other methods, are more technically feasible and market ready techniques. It is well established that the uniform and/or oscillatory blowing and suction flow control mechanisms significantly improve the lift-to-drag ratio, and further, postpone the boundary layer separation as well as the stall. The oscillatory blowing and suction flow control, however, is more efficient compared to the uniform one. A wide range of parameters is involved in controlling the behavior of a blowing and/or suction flow control, including the location, length, and angle of the jet slots. The oscillation range of the jet slot is another substantial parameter.