应用欧拉拉格朗日模型对某弹用微型固体火箭脉冲发动机进行两相流模拟,建立了三维空间的物理模型和数学模型,研究了纯气相和1~50µm不同直径颗粒对脉冲发动机性能参数的影响。数值模拟结果表明,气相的惯性作用使发动机内流场呈现不均匀分布,不同直径的颗粒在内流场中的分布情况不一样。在同一质量分数下,颗粒直径越大,对气相的传热和阻碍作用就越小,颗粒直径越小,粒子的随流性越好,与气相能量和动量的交换越显著。

Euler-Lagrange model was used to solve two-phase flow and simulation in micro pulse solid rocket motor, a three-dimension physics model and a mathematical model of motor flow field were established, the effects of pure gas and particles diameters from 1 ~ 50 µm on pulse solid rocket motor were studied. The numerical simulation result show that the pure gas inertia results in asymmetric distribution of gas-phase field, the distribution of particles is different from different diameter. In the same mass proportion, the bigger the particle is, the less diathermancy and baffle on gas-phase is: The smaller the particle is, the better the flowing property becomes, the more obvious the exchange of energy and kinetic energy with gas-phase is.