Karman vortex is generated in the wake of an object placed in a uniform flow. When this vortex occurs, the object vibrates and eventually breaks. Therefore, it is important to suppress Karman vortices. Flow control methods such as plasma actuators and suction/blowing techniques have been actively studied. Among these, suction and blowing are widely used due to their simple operating mechanisms. In this study, we investigated several jet configurations to examine the feasibility of suppressing Kármán vortex shedding using two jets installed in the wake of a square cylinder. The objective was to evaluate the resulting lift and drag forces acting on the cylinder. As a result, differences in flow field, lift, and drag were observed depending on the jet configuration, indicating that the placement of jets significantly influences flow control performance.
KAMITANI et al. (Wed,) studied this question.