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采用粒子图像测速(PIV)技术,在2200,4800,7300,14600Pa空气压力条件下,测量了高频高压表面介质阻挡放电(surface dielectric barrier discharge,SDBD)等离子体诱导流场.根据速度场和N-S方程求解了等离子体体积力分布,分析了空气压力和激励器电压对等离子体体积力影响.实验结果表明:相同空气压力时,激励器电压越高体积力越大.相同激励器电压时,体积力随空气压力升高减小.在体积力分布区域,体积力方向一致,较大体积力区域分布于体积力方向线上游,流场高速流动区域紧挨较大体积力分布区域,位于体积力方向线下游.
Particle image velocimetry (PIV) was used to measure plasma induced flow field at high frequency and high pressure surface dielectric barrier discharge (SDBD) under the conditions of air pressure of 2200, 4800, 7300 and 14600Pa. According to the velocity field and NS The plasma volume force distribution is solved by the equation and the influence of air pressure and exciter voltage on the plasma body force is analyzed.The experimental results show that the volume force is higher when the actuator voltage is higher with the same air pressure The force decreases with the increase of air pressure.In the region of volume force distribution, the direction of body force is the same, and the region of larger body force distributes upstream of the direction of body force and the region of high velocity flow is close to the region of larger body force distribution, Downstream of the direction line.