Abstract
Previous studies on vortex breakdown control via forebody slot blowing show that this technique can be used to delay vortex breakdown on a delta wing more effectively than some existing blowing techniques. In this paper, we further extended the investigation using a generic delta wing-body model with symmetrical and differential forebody slot blowing by means of flow visualization and force measurement in a water tunnel, at the Reynolds number of 8.5 x 10 4 , and the angles of attack of 17 to 30 degrees. The experimental results show that symmetrical forebody slot blowing leads to a significant delay in the formation of vortex breakdown and an increase in the lift of about 5%. The differential blowing can manipulate the vortex breakdown position and change the roll moment of the wing, which suggests that differential forebody slot blowing can be a potential mean for roll control.
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