This paper presents an engineering model of saw-tooth DBD plasma actuators for flow control CFD simulations. These actuators, which consist of symmetric saw-tooth shape electrodes instead of straight edged electrodes as in conventional configurations, induce three-dimensional structures in the flow making them potentially more effective in energizing the boundary layer. The modeling methodology and the implementation of the model in CFD are first presented. Subsequently, CFD predictions for a saw-tooth actuator on a flat plate with the model are compared with experimental data in the literature for validation. Lastly, preliminary CFD simulations are carried out with the model for a 2-D extruded wing at high angle of attack to investigate the effect of saw-tooth DBD plasma actuators on boundary layer separation.
Nomenclature= tooth angle = normal distance = vertical distance = components of the 2-D conventional plasma body force = components of the 3-D saw-tooth plasma body force
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