Numerical study of blowing and suction control mechanism on NACA0012 airfoil

A jet with a width of 2.5% the chord length is placed on a NACA0012 airfoil's upper surface simulating the blowing and suction control under Re = 5 × 10⁵and angle-of-attack 18-deg conditions. Nearly 300 numerical simulations are conducted over a range of parameters (jet location, amplitude, and angle). The physical mechanisms that govern suction and blowing flow control are determined and analyzed, and the critical values of suction and blowing locations, amplitudes, and angles are discussed. The current successful large-scale numerical studies create a useful knowledge base for further exploration of multijet control system.