Abstract: Numerical studies were conducted to investigate effectiveness of dynamic stall control of a synthetic jet (SJ) on a subsonic pitching NACA 0012 airfoil. The flow field is simulated by solving unsteady two-dimensional, compressible Reynolds-averaged Navier-Stokes (RANS)equations. The flow characteristics and the influence of the respective parameters of the SJ (momentum coefficient, frequency, and location) are analyzed. Numerical results indicate that SJ can be used to augment the maximum lift and reduce drag under the condition of dynamic stall.

Key words: Navier-Stokes equations, pitching airfoil, synthetic jet, dynamic stall