中文摘要
題 目：電漿致動器最佳化及其於三角翼上應用之研究
研 究 生：薛懷甯
指導教授：溫志湧
電漿致動器主要作用原理是在飛具表面通以高壓電場解離鄰近氣體形成電漿，藉由電場誘導產生的離子風(Ionic wind)來改變邊界層速度分佈，以改變飛具之空氣動力特性。電漿致動器根據其構造不同可大略分為兩大類：光暈放電(Corona discharge)以及介電質放電(Dielectric barrier discharge) 。
本研究先對電漿致動器的電極幾何參數進行最佳化，實驗結果發現當暴露電極(Exposed electrode)寬度越窄、覆蓋電極(Encapsulated electrode)寬度越寬，兩電極不重疊時，電漿致動器誘導出的離子風將變大。經過最佳化後之電漿致動器，會裝置在三角翼翼前緣，實際進行流場可視化(Flow visualization)以及氣動力量測實驗。實驗結果顯示，電漿致動器能明顯改變三角翼兩側渦流潰散位置，並提升升力係數以及滾轉力矩，且最佳化致動器之提升幅度優於實驗中其他致動器。

Abstract
Subject：Optimization of a DBD Plasma Actuator and Its Application on a Delta Wing
Student：Hwai-Ning Hsueh
Advisor：Chih-Yung Wen
The working principle of plasma actuators is applying a high voltage electric field to ionize the air on the surface of an aerial vehicle. The boundary layer is accelerated by the ionic wind that is induced by the electric field so that to change the aerodynamic character. Then, plasma actuators can be categorized as corona discharge and dielectric barrier discharge (DBD).
The research optimizes the electrode dimensions of the dielectric barrier discharge actuators at first. The results indicate that the velocity of the induced ionic wind will be larger if the exposed electrode is narrow, covered electrode is wide and two electrode are not overlapped. The optimized actuator will be set on the leading edge of the delta wing, and the flow visualization and force measurements are performed. The result shows that the breakdown positions of the vortices are changed, and the optimized actuator can enhance more lift and the roll moment of the delta wing.

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