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考虑到实际卫星总体布局特点及姿控发动机燃气喷流为多组分的特点,采用差分求解N-S(Navier-Stokes)方程耦合DSMC(Direct Simulation Monte Carlo)方法建立三维多组分羽流场的数值模拟模型,对5 N无水肼单组元姿控发动机喷管产生的燃气羽流场及其效应进行数值模拟,计算得出羽流场的物理参数分布、化学组分分布,得到了羽流对太阳能帆板的羽流气动力和气动热效应.计算结果表明对于太阳能帆板的羽流效应防护应以N2,NH3为主,姿控发动机羽流会对太阳能帆板撞击产生气动力和气动热的影响,在太阳能帆板前沿中点处,存在气动压强峰值和气动热流峰值.计算结果为研究羽流效应提供了参考依据.
Considering the characteristics of the overall layout of the actual satellite and the gas jet control of the engine as multi-component, the Navier-Stokes (DS) coupled DSMC (Direct Simulation Monte Carlo) method is used to establish the numerical value of three-dimensional multi-component plume Simulation model was established to simulate the gas plume field and its effect produced by 5 N anhydrous hydrazine one-component attitude control engine nozzle. The physical parameter distribution and chemical composition distribution of the plume field were calculated and the plume pair The aerodynamic and aerodynamic thermal effects of the solar panel are calculated.The results show that the protection of the plume of solar panels should be dominated by N2 and NH3 and the attitude control of the plume will affect the aerodynamic and aerodynamic heat impact , The peak value of aerodynamic pressure and the peak value of aerodynamic heat flow exist at the midpoint of the forefront of solar windsurface.The calculated results provide a reference for the study of plume effect.