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为了研究气-粒两相流对固体火箭发动机燃气舵的影响,基于固体火箭发动机燃气舵的工作特点,在求解二维Navier-Stokes(N-S)方程的基础上,分别对有无颗粒相的流场进行了数值模拟,并且考虑了颗粒直径为1,10μm和30μm,颗粒质量分数为15%,20%和30%,舵偏角为0°,5°,10°及15°的各种组合工况.结果表明,在相同外界条件下,有颗粒相时舵表面的压力要大于无颗粒相时的表面压力,而且这种差别在迎风面和舵片前半部分表现得比较明显;在气动性能方面,有颗粒相时升力和阻力都要比无颗粒相时大,这种差别随颗粒直径的增大而减小,在一定颗粒质量分数范围内,随颗粒质量分数的增加而增大.
In order to study the effect of gas-particle two-phase flow on the gas rudder of a solid rocket motor, based on the operating characteristics of the gas rudder of a solid rocket motor, based on solving the two-dimensional Navier-Stokes equations, Field were numerically simulated and various combinations of particle diameters of 1, 10 and 30 μm, particle fractions of 15%, 20% and 30% and rudder angles of 0 °, 5 °, 10 ° and 15 ° were considered The results show that under the same external conditions, the pressure on the surface of the rudder with particle phase is greater than the surface pressure without particle phase, and the difference is obvious on the windward side and the first half of rudder blade. In terms of particle phase, the lift and the resistance are larger than those of the particle-free phase. The difference decreases with the increase of the particle diameter, and increases with the increase of particle mass fraction within a certain particle mass fraction.