American Journal of Applied Sciences

Numerical Investigation of Flow Control by Suction and Injection on a Subsonic Airfoil

M. H. Shojaefard, A. R. Noorpoor, A. Avanesians and M. Ghaffarpour

DOI : 10.3844/ajassp.2005.1474.1480

American Journal of Applied Sciences

Volume 2, Issue 10

Pages 1474-1480


This study presents a numerical study concerning flow control by suction and injection. The case studied is the flow field over a subsonic airfoil with four suction and injection slots on the suction side of the airfoil. Five different angles of attack, 0, 5, 10, 13.3 and 20 with the Mach number of 0.15 are studied. Three cases are studied in each angle of attack. The three cases are airfoil with surface suction, surface injection and the base airfoil. A commercial CFD code, the FLUENT, is used in this study. The effect of suction and injection on aerodynamic coefficients is investigated. The results show that the surface suction can significantly increase the lift coefficient. The injection decreases the skin friction.


© 2005 M. H. Shojaefard, A. R. Noorpoor, A. Avanesians and M. Ghaffarpour. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.