02.4 - Applied Aerodynamics
NUMERICAL STUDY OF ACTIVE SHOCK WAVE-TURBULENT BOUNDARY LAYER INTERACTION CONTROL FOR TRANSONIC AERODYNAMICS
Z. Seifollahi Moghadam ¹, A. Jahangirian¹; ¹Amirkabir University of Technology, Iran
Surface mass transfer using fluid suction or injection is one of the active devices for the control of shock wave-boundary layer interaction as a mean of airfoil drag reduction or aerodynamic performance improvement. A numerical parametric study is carried out in order to gain an insight into the effects of mass transfer parameters i.e. the location, flow rate and the inclination angle on the aerodynamic coefficients. The parametric study is done for off-design transonic flow conditions containing strong shock-boundary layer interaction around airfoil. The flow is simulated by solving the compressible Navier-Stokes equations in Reynolds Averaged form together with a two-equation turbulence model. A cell-centered finite-volume scheme is developed with a dual-time implicit time discretization. Results are presented for different mass transfer parameters. It was concluded that simultaneous improvement of drag coefficient and aerodynamic efficiency factor(cl/cd) needs special design of suction and/or injection injection parameters.