Influence of oxygen content on the characteristics of DBD plasma actuator

29th International Conference on Photonic, Electronic, and Atomic Collisions

Mangina, R.S.^1 ; Enloe, C.L.^1 ; Font, G.I.^1

Department of Physics, United States Air Force Academy, CO

80840, United States^1

关键词: Aero-dynamic performance;    Applied voltages;    Dielectric barrier discharge plasmas;    Discharge structures;    Freely moving;    Influence of oxygen;    Oxygen content;    Transient motions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/4/042009/pdf
DOI  :  10.1088/1742-6596/635/4/042009

来源: IOP

【 摘 要 】

The aerodynamic performance of an AC powered dielectric barrier discharge (DBD) plasma actuator immersed in pure oxygen and also in O2+ noble gas mixtures is presented in terms of actuator's discharge structure and momentum coupling to the surrounding gas. At various gas pressures the impulse imparted to the freely-moving actuator body and its transient motion as a function of the applied voltage from 8-24 kV at f = 200 Hz is determined using laser interferometry. The present E/N results show that with increase of oxygen content the momentum coupling is better, especially in the negative species dominated forward discharge phase.