介质阻挡放电等离子体气动激励的动量特性

Momentum characteristic of dielectric barrier discharge plasma aerodynamic actuation

从诱导气流速度和体积力两个方面开展了介质阻挡放电等离子体气动激励的动量特性研究,对不同激励参数下的诱导气流速度进行了测量与结果分析;通过对体积力的实验测量与理论计算,对比研究了体积力的变化规律与主要影响因素.结果表明:等离子体气动激励可以增大气流速度,但随着气流速度的增大,等离子体气动激励的加速效果减弱;激励电压或激励频率增大,体积力均表现为线性增加,但激励电压增大时可以更好的增大体积力;与增大电极内间距相比,增大下层电极宽度可以产生更大的体积力.

Momentum characteristic of dielectric barrier discharge plasma actuation was studied from induced airflow velocity and body force.The former one under different actuation parameters was measured and analyzed,and the latter one was compared by the measured and calculated values to consider the variable regular and key factors for body force.Results show that the reference velocity can be enhanced by plasma actuation,but the acceleration effect is weakened with the rise of incoming velocity;the body force values increase linearly with the rise of actuation voltage or frequency,but increase more with the former one;increasing low-layer electrode width can enhance body force better than inner electrode distance.