scholarly journals The Application of Suction and Blowing in Performance Improvement of Transonic Airfoils with Shock Control Bump

2017 ◽  
Vol 24 (1) ◽  
pp. 274-292 ◽  
Author(s):  
Karim Mazaheri ◽  
Ashkan Nejati ◽  
Kiarash Charlang Kiani
Keyword(s):  
Performance Improvement ◽  
Shock Control Bump ◽  
Shock Control ◽  
Suction And Blowing

scholarly journals Unsteady Simulation of Transonic Buffet of a Supercritical Airfoil with Shock Control Bump

Aerospace ◽  
2021 ◽  
Vol 8 (8) ◽  
pp. 203
Author(s):  
Yufei Zhang ◽  
Pu Yang ◽  
Runze Li ◽  
Haixin Chen
Keyword(s):  
Lift Coefficient ◽  
Pressure Coefficient ◽  
Flow Characteristics ◽  
Control Effect ◽  
Shock Control Bump ◽  
Shock Control ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Unsteady Simulation ◽  
Drag Ratio

The unsteady flow characteristics of a supercritical OAT15A airfoil with a shock control bump were numerically studied by a wall-modeled large eddy simulation. The numerical method was first validated by the buffet and nonbuffet cases of the baseline OAT15A airfoil. Both the pressure coefficient and velocity fluctuation coincided well with the experimental data. Then, four different shock control bumps were numerically tested. A bump of height h/c = 0.008 and location xB/c = 0.55 demonstrated a good buffet control effect. The lift-to-drag ratio of the buffet case was increased by 5.9%, and the root mean square of the lift coefficient fluctuation was decreased by 67.6%. Detailed time-averaged flow quantities and instantaneous flow fields were analyzed to demonstrate the flow phenomenon of the shock control bumps. The results demonstrate that an appropriate “λ” shockwave pattern caused by the bump is important for the flow control effect.

Structural Concept of an Adaptive Shock Control Bump Spoiler

2017 ◽  
Author(s):  
Markus Kintscher ◽  
Hans Peter Monner
Keyword(s):  
Shock Control Bump ◽  
Shock Control ◽  
Structural Concept

Robust active shock control bump design optimisation using hybrid parallel MOGA

2013 ◽  
Vol 80 ◽  
pp. 214-224 ◽  
Author(s):  
D.S. Lee ◽  
G. Bugeda ◽  
J. Periaux ◽  
E. Onate
Keyword(s):  
Design Optimisation ◽  
Shock Control Bump ◽  
Shock Control

Numerical and Experimental Examination of Shock Control Bump Flow Physics

2012 ◽  
pp. 333-349 ◽  
Author(s):  
K. Nübler ◽  
S. P. Colliss ◽  
T. Lutz ◽  
H. Babinsky ◽  
E. Krämer
Keyword(s):  
Experimental Examination ◽  
Flow Physics ◽  
Shock Control Bump ◽  
Shock Control
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