S055031 電極サイズがプラズマアクチュエータ誘起流の指向性に与える影響([S05503]流れの抵抗低減(3))

概要

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The effects of electrode dimensions and wall height on the flow induced by using a dielectric barrier discharge plasma actuator (DBD-PA) have been investigated in this study. Recent study reported that the direction of the induced airflow is not only forward (from upper electrode to lower electrode) but also reverse (from lower electrode to upper electrode). In the case of reverse flow waveform condition, it was founded that the electrode dimensions affect the flow direction. Perpendicular direction flow is observed when upper electrode is very short (0.5 and 1 mm). It should be noted that there is no flow when the wall height is shorter than 5 mm at the reverse flow condition. With the wall height higher than or equal to 5 mm, reverse flow was observed with a vortex near the DBD-PA. Our experimental results indicate that the own vortex is important to realize reversed flow induced by DBD-PA.
2011-09-11