Abstract: In this paper, the aerodynamic interaction of a vortex with stationary airfoil is studied by numerical simulation. The Beam-Warming implicit algorithm is used to solve Navier-Stokes equations. The investigation includes the influence of a concentrated vortex on shock and separation; the results show that the location of vortex can induce the change of the lift and shock, the separation can be controlled and lift can be increased by the favourable combination of vortex strength and its location.

Key words: vortex interaction, shock, separation flow, numerical simulation