Study of Diffusion control of jet using plasma actuator

-The influence of the jet diffusion by the plasma induced flow instability-

Abstract

In order to elucidate the jet diffusion mechanism by coaxial DBD plasma actuator, the plasma induced flow was measured by a hot wire anemometer, were analyzed. By changing the duty ratio, it was show a change in the three velocity fluctuation distribution. In duty = 10%, the shear layer was provided a periodic disturbance. In duty = 50%, it became the pulsating jet. In duty = 90%, it was a continuous shear layer. It was examine the fluctuation strength and periodicity of the plasma induced flow, due to change in the duty ratio.