Based on Direct Simulation Monte Carlo (DSMC) method, the model of coalescence and separation in binary collision of liquid drops and solid particles is presented with considering of DSMC algorithm. An approach of DSMC for a gas-particle two-way coupled model is developed for multiphase rarefied flow. Simulations are performed for the case of two-dimensional hypersonic multiphase rarefied jet flows. The results show that the method is provided as a new approach for the multiphase flow in the transitional regime of rarefied gas.%基于直接模拟Monte Carlo(DSMC)方法,构造适用于DSMC算法的固态和液态颗粒碰撞、聚合和分离模型,发展稀薄条件下双向耦合作用的气粒多相流的DSMC算法,在此基础上初步实现高超声速稀薄流环境中的气粒多相喷流流场数值模拟.算例结果表明该方法能为稀薄过渡区气粒多相流动提供一种新的应用研究手段.
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