Issledovanie vliyaniya skorosti nabegayushchego potoka na techenie, indutsiruemoe dielektricheskim bar'ernym razryadom

Abstract

Plasma actuators based on a dielectric barrier discharge (DBD) are considered as a promising method оf flow control. Their main advantage is the possibility of flow acceleration by the ion wind without using movable elements. The generation of the ion wind by DBD in a settling gas has been studied quite comprehensively. At the same time, almost all aerodynamic applications of this method of flow control presume the presence of an external flow. However, the emergence of a bulk force in DBD in such conditions has not been investigated in detail. This study is devoted to detailed analysis of this effect. We have investigated the influence of DBD on the velocity distribution near electrodes using the PIV method and have calculated the bulk force generated by the ion wind. The results of this study demonstrate a substantial effect of the incoming flow velocity on the ion wind generation.