This study analyzes the effect of DBD plasma actuators on the unsteady flow of a cycloidal rotor with six blades of NACA 0016 type using computational fluid dynamics (CFD). The flow field modeling is performed through a sliding mesh technique that was used with k-ω SST turbulence model. The plasma body force generated by a dielectric barrier discharge DBD actuator is modeled with the phenomenological Shyy's model. The impact of plasma actuators on the flow is studied using two actuators located on the upper and bottom surfaces of the airfoil in each of the cyclorotor blades. Three cases are studied: actuation off; actuation over the upper surface of the blades; actuation over the bottom surface of the blades. The vorticity field and the evolution of the lift, thrust and power consumption are analyzed for when a control law is designed that combines both actuations based on the two last cases. The results show that the use of the proposed control law for plasma actuation improves the cyclorotor lift peak value per blade in 11% and the overall thrust by 1.5%. It is also demonstrated that the plasma actuator mitigates the virtual camber on the cyclorotor, this effect is named counter-virtual camber. We show that DBD actuators produce a reduction on the recirculation bubble at the blades suction surface. This effect is important to reduce the thickness of the blades, bringing improvements in terms of mitigating unsteady periodic mass acceleration in cyclorotors.

这项研究使用计算流体动力学（CFD）分析了DBD等离子体致动器对带有六个NACA 0016型叶片的摆线转子的非稳态流动的影响。通过与k-ω一起使用的滑动网格技术执行流场建模SST湍流模型。介电势垒放电DBD执行器产生的等离子体力用现象学的Shyy模型建模。使用位于每个回旋翼叶片的翼型上表面和下表面的两个执行器研究了等离子体执行器对流动的影响。研究了三种情况：致动关闭；在叶片的上表面上致动；在叶片底部表面上的驱动。当设计了一种控制律时，分析了涡度场以及升力，推力和功率消耗的变化，该控制律结合了基于最后两种情况的两种驱动方式。结果表明，采用建议的控制律进行等离子驱动可使每个叶片的回旋转子升力峰值提高11％，总推力提高1.5％。还证明了等离子体致动器减轻了旋翼转子上的虚拟外倾角，这种作用称为反虚拟外倾角。我们表明，DBD执行器可减少叶片吸入表面的再循环气泡。该效果对于减小叶片的厚度很重要，从而在减轻旋翼转子中不稳定的周期性质量加速度方面带来了改进。