“…Up to now, many techniques have been studied to control the flow with the aim to suppress the von Karman sheet or to influence the aerodynamic forces. These techniques varied from passive control which affects the surface of the bluff body, such as the addition of splitter plates [1,2], flexible filament [3], or changing its property like adding dimples [4] or grooves [5], to active control using synthetic jets [6][7][8][9], plasma actuators [10][11][12], blowing suction [13,14], flapping foil [15,16], electromagnetic forces [17,18] acoustic actuator [19,20].…”