关键词: 阻挡介质放电(DBD), 纳秒脉冲, 翼型, 流场, 防冰特性, 数值模拟

Abstract: Ice accretion is a common phenomenon in flights. The ice accretion on wings causes weight increase, aero-dynamic performance degradation and control ability difficulties, so the ice protection system is necessary. The hot air anti-ice system and the electro-thermal anti-ice system have been used widely in current planes. In recent years, plasma active flow control has received growing attention. In experiments, the NanoSecond pulse Dielectric Barrier Discharge (NSDBD) plasma actuator is observed to be able to heat the gas quickly. Considering the heating effect, this paper makes a numerical analysis of the anti-icing property of the NSDBD plasma actuator. First, an ice accretion model is developed based on the Messinger model. Second, the influence of the plasma on the air flow field is calculated by using the phenomenological model for the NSDBD plasma actuator and unsteady Reynolds-Averaged Navier-Stokes equations. Thirdly, the NSDBD plasma actuator is placed in the anti-ice area of the leading edge of the NACA0012 airfoil. The phenomenological model for the NSDBD plasma actuator and the ice accretion model are combined to study the anti-icing property of the NSDBD plasma actuator. The result shows that the hot air heated by the plasma can cover the anti-icing area for a long time. The numerical simulation result shows that there is no ice accretion when the plasma actuator is operating in the rime ice condition, demonstrating the effectiveness of the NSBDB plasma actuator used in anti-icing. Then anti-icing properties of the NSDBD plasma actuator with different parameters have also been studied. In general, the peak voltage and pulse frequency have influence on the anti-icing performance of the NSDBD plasma actuator. With respect to energy consumption and anti-icing effect, there exist the optimal peak voltage value and pulse frequency under the given calculation conditions. The arrangement of the plasma actuator also influences the anti-icing property, and should be analyzed specifically.

Key words: Dielectric Barrier Discharge (DBD), nanosecond pulse, airfoil, flow field, anti-icing property, numerical simulation