Flow morphing by coaxial type plasma actuator

[摘要] The purpose of study is to achieve the fluid drag reduction of a circular disk by Dielectric Barrier Discharge Plasma Actuator (DBD-PA). We here introduced "Flow Morphing" concept that flow around the body was changed by DBD-PA jet, such as the body shape morphing. Coaxial type DBD-PA injected axisymmetric jet, generating the vortex region on the pressure side of the circular disk. The vortex generated by axisymmetric plasma jet and flow around circular disk were visualized by tracer particles method. The fluid drag was measured by compression type load cell. In addition streamwise velocity was measured by an X-type hot wire probe. The extent of fluid drag reduction by coaxial type DBD-PA jet was influenced by the volume of vortex region and the diameter of plasma electrode.

[发布机构] Graduate School of Engineering, Tokyo University of Science, Tokyo, Japan^1;Department of Mechanical Engineering, Tokyo University of Science, Tokyo, Japan^2

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Axisymmetric jet;Axisymmetric plasmas;Dielectric barrier discharge plasma actuators;Hot-wire probes;Plasma actuator;Plasma electrodes;Stream-wise velocities;Tracer particles method