Experimental investigation of the lift and drag coefficients of a circular cylinder using three different configurations of plasma actuator

In this paper, the existence of the various configurations of plasma actuator for controlling the flow around a circular cylinder was experimentally investigated. The cylinder was made of PVC and considered as a dielectric barrier. Two electrodes were flushmounted on the surface of the cylinder and were connected to a DC high voltage power supply for generation of electrical discharge. Pressure distribution results showed that the existence of the plasma changed the pressure distribution around the cylinder and consequently the lift and drag coefficients for these three configurations of plasma actuator. In addition to the existence of the plasma, it was found that the existence of the electrodes on the cylinder had changed significantly the pressure distribution of the cylinder and also the behavior of the lift and drag coefficients. The effect of the electrodes is comparable with the effect of plasma actuator in controlling the flow field around the cylinder and this effect was not reported by the other researchers.

کلیدواژه ها:

Plasma actuator ، Generalized glow regime ، High voltage power supply ، Wind tunnel ، Flow control