Passive separation control on a body at transonic speed

摘要

The present paper proposes a new approach to control flow separation around a body. Flow separation is controlled by inserting simple tabs inside the separated region to suppress the reverse flow action. This is expected to increase the pressure in the base region of the body, thus reducing drag. Moreover, flow instability is also expected to decrease because of change in the wake profile. The cases considered in the present investigation are flows around a circular cylinder at M=0.6 and 0.73. tabs having lengths of 10/100 and 20/100 of the cylinder diameter were used.