SDBD 발생 시 메시 접지 전극을 이용한 이온 풍속의 향상

초록

Recently, active flow control technology has become a rapidly developing topic in aeronautics. Active flow control can be used to improve airfoil durability, reduce noise, and improve fuel efficiency. A typical device for active flow control is a plasma actuator using SDBD(Surface dielectric barrier dischage). Plasma actuator using SDBD has the following advantages. Plasma actuator using SDBD doesn’t require mechanical devices, have low power consumption, and are fast responsive. However, this device is only applicable to small aircraft due to the relatively low ionic wind velocity. Therefore, in this study, the shape of the ground electrode is changed to a mesh instead of a plane plate to increase the ionic wind velocity. The ionic wind velocity is up to 1.33 times higher with the mesh ground electrode than with the typical plane ground electrode used as a plasma actuator under the same condition (20kV, 60Hz). Also Power consumption of device is greater with the mesh ground electrode. 1 mm grid mesh electrode induces the strongest ion wind relative to power consumption. The results of this study will provide useful data for research on active flow control devices using SDBD.

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