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基于等离子发生器简化模型求解电势方程,得到电场及等离子分布,并将电场对等离子的作用力耦合到流动方程中.结果表明,电场力在电极交接处附近诱导气体运动并产生“壁面射流”效应,增加低能流体动量,显著改善附面层内速度分布;与无等离子控制措施相比,分离点位置最大延迟约4%特征尺寸,再附点位置最大提前约12%特征尺寸,分离范围明显减小.此外,电压较大、电极与流体接触式布置均能提高等离子控制流动分离的能力.
Based on the simplified model of plasma generator, the potential equation was solved to obtain the electric field and the plasma distribution, and the force of electric field to the plasma was coupled into the flow equation.The results show that the electric field force induces the gas movement near the electrode junction and produces the “ ”Effect, increase low-energy fluid momentum, significantly improve the speed distribution within the coating; compared with no plasma control measures, the maximum delay of separation point position of about 4% feature size, re-attachment point maximum advance of about 12% feature size, separation range Significantly reduced.In addition, the voltage is larger, the electrode and the fluid contact arrangement can improve the ability of plasma control flow separation.