Influence of Airfoil Profile and Excitation Parameters on Plasma Flow Control
Flow control can improve the force state of airfoil and thus improve the aerodynamic characteristics.As an active flow control technology,plasma flow control is one of the hot spots in current research.In this paper,a plasma phenomenological model is adopted,which ignores the influence of plasma excitation on momentum and only considers the influence of energy injection on heat effect.The model is coupled with the flow N-S equation to study the control effect of plasma aerodynamic excitation on airfoil flow separation with different geometric shapes by numerical simulation.The simulation results show that:The application of plasma excitation can improve the aerodynamic characteristics of airfoil by increasing lift and drag,and control the flow separation of airfoil.With the increase of airfoil thickness,the increase of C1 decreases from 147.7％to 72.6％,and the increase of C1 decreases from 147.7％to 19.6％with the increase of bend.The control effect of the excitation flow is weakened and the position of the maximum thickness is near the front or back.In addition,the flow control function is related to the excitation parameters,and changing the excitation voltage peak and frequency will affect the control effect.The research and analysis can provide help for subsequent airfoil selection and better selection of excitation parameters.
万方数据
维普
