Synthetic Jet을 이용한 유동제어 특성연구 = Study of flow control character using synthetic jet

To develop the aerodynamic performance, there are widely two group of studies are achieved. The first one is about design of the vehicles geometry and the second one is about aerodynamic devices. Geometry design is highly credible and stable method. But it is not flexible and each parts are related interactively. So if one part geometry are modified, the other parts are required to be redesigned. The other hand, flow control by aerodynamic device is flexible and modulized method. Though it needs energy, relatively little input makes far advanced aerodynamic performance. Synthetic Jet is one of the second group method. The device repeats suction and blowing motion in constant frequency. According to the performance, the flow which are near the flight surface are served momentum. This mechanism can reduce the aerodynamic loss by boundary layer and separated flow. Synthetic jet actuator has several parameters, that influence the flow control. This study focus the parameters effects of the synthetic jet - orifice geometry, frequency, jet speed and etc.본 연구는 산업자원부 지원으로 수행하는 21세기 포론티어연구사업(스마트무인기기기술개발)과 국방과학연구소 및 서울대학교 비행체특화연구센터, BK21 사업의 연구비 지원에 의한 연구결과임