DBD 플라즈마 엑츄에이터를 이용한 3차원 모델의 유동박리제어

초록

Flexible DBD (dielectric barrier discharge) actuator for flow separation control of 3-dimensional model was designed. A thin film was used as a dielectric barrier not to induce the profile drag when attached on the model. The ionic wind velocity of DBD actuator was measured as discharge voltages and electrode gaps. The DBD actuator was installed on the surface of the front part-to control the flow separation of the three dimensional train model. The reduction of aerodynamic drag was verified using wind-tunnel tests. The location of DBD actuator was important to improve the drag reduction, considering that the degree of drag reduction was different according to the location.