固体火箭技术Issue(6)：797-803,7.DOI:10.7673/j.issn.1006-2793.2014.06.011
羽流中固体颗粒在真空环境下分布的数值仿真
Numerical simulation on particle distribution of the plume flow in vacuum
摘要
Abstract
A numerical simulation approach was presented to simulate rarefied two⁃phase mixture plume flow by applying two⁃way coupling technique of DSMC method. The interaction between rarefied gas and solid particles was dealt with decoupling compu⁃tation of momentum and energy exchange between phases. The TPMC computing technology was also developed to solve the space transport characteristics of solid particles in distant field space. The two⁃phase plume flow field and particle distribution characteris⁃tics far away from the engine nozzle were simulated by the DSMC and TPMC method. It is indicated that the present methods and models are correct by the comparison of the computed results with the typical confirmed results from the reference and theoretical a⁃nalysis. There exists some retarded elasticity in gas phase diffusion of solid particles to some extent. From the engine nozzle dis⁃tance, gas and solid particles have a greater impact caused with temperature drop and increases of the speed of particles. The granu⁃lar temperature away from the nozzle exit tends to balance, and the particle temperature is very different with different size of parti⁃cles. It is shown that there are more intensely interaction between phases in case of higher number density, and particle size affects diffusing range and temperature distribution. The results are of great significance to guide the vacuum gas⁃solid two⁃phase plume transmission.关键词
稀薄气体/DSMC方法/两相流/双向耦合/TPMC方法/高空羽流Key words
rarefied gas/DSMC method/two-phase flow/two-way coupled method/TPMC method/plume flow分类
航空航天引用本文复制引用
李中华,李志辉,吴俊林,彭傲平..羽流中固体颗粒在真空环境下分布的数值仿真[J].固体火箭技术,2014,(6):797-803,7.基金项目
973计划（2014CB744100）；国家自然科学基金（91016027、11325212）；国防基础科研基金（51313030104）。 （）
