DCジェット生成に着目した三電極プラズマアクチュエータの作動特性調査

抄録

Tri-electrode plasma actuator (TED-PA) is an active flow control device utilizing the ionic wind coming from atmospheric discharge. It consists of exposed a DC and an AC high voltage electrode, a dielectric plate and a covered ground electrode. For high flow controllability, the design optimization is needed to maximize the ionic wind from the DC electrode. In this report, we experimentally investigate the influence of the AC discharge condition on the DC discharge and the DC ionic wind. For this purpose, the discharge photograph and thrust of jet is investigated. The results are compared with those of two-electrode actuator which has only the AC and DC electrode. As a result, it is found that the DC discharge and thrust enhanced by the AC barrier discharge and increasing the AC frequency is effective for the enhancement. However, high frequency application induce jet from the AC electrode and the AC jet collide with the DC jet so thrust decrease.