216105 DC放電プラズマアクチュエータが超音速流れの圧力場に及ぼす影響(一般05 流体力学・流体工学2)

概要

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Characteristics of a plasma actuator driven by direct-current discharge were studied experimentally in a supersonic flow. The discharge is generated between two small pin electrodes mounted on a Laval nozzle wall with a circle constant cross-sectional area in a Mach 3 flow. In order to investigate the plasma phenomena, two types of electrode arrangements were examined. Current and voltage measurements indicated the generation of the discharge at low power consumption. It was confirmed that the wall static pressure increased beside each electrode and decreased just behind the anode for a 100mA discharge. Furthermore, the increase in stagnation pressure was observed close to the anode surface. It was suggested that enthalpy elevation due to the Joule heating of the flow led to the change in the stagnation pressure.
2011-03-17