基于滑移流模型的真空容器内羽流流场数值仿真  

Numerical simulation of plume flow field in vacuum chamber based on slip flow model

作　　者：高文 林博颖[1] 吴东亮[1] 李西园[1] 陶东兴 柳晓宁[1] 杨晓宁[1,2] GAO Wen;LIN Boying;WU Dongliang;LI Xiyuan;TAO Dongxing;LIU Xiaoning;YANG Xiaoning(Beijing Institute of Spacecraft Environment Engineering;National Key Laboratory of Science and Technology on Reliability and Environmental Engineering:Beijing 100094,China)

机构地区：[1]北京卫星环境工程研究所,北京100094 [2]可靠性与环境工程技术重点实验室,北京100094

出　　处：《航天器环境工程》2024年第2期129-137,共9页Spacecraft Environment Engineering

基　　金：北京市科技新星项目(编号:Z211100002121077)。

摘　　要：预示真空容器内羽流的力、热分布规律是制定大型真空羽流试验方案、提升试验环境模拟有效性的关键前提之一。针对“嫦娥七号”飞跃器点火试验,利用考虑H_(2)O与CO_(2)吸附的滑移流计算流体力学(CFD)方法,对真空容器内羽流流场压力、温度及气体组分时空分布的初期变化进行了仿真计算。结果表明,流场整体温度与H_(2)O组分质量分数均随时间推移呈急剧上升后平稳下降趋势,而压力则随时间推移呈波动上升趋势。基于该结论提出了试验优化建议。该方法为真空容器内羽流流场仿真提供了新思路,可为后续相关试验方案设计提供支撑。Predicting the aerodynamic and thermal distributions of the plume in vacuum chamber is one of the key prerequisites for developing a large-scale vacuum plume test scheme and improving the simulation effectiveness of the experimental environment.For the ignition test of China's Chang’e-7 leaper,a slip flow computational fluid dynamics(CFD)method taking the adsorption of H_(2)O and CO_(2) into consideration was used to simulate the initial changes in the spatial-temporal distributions of pressure,temperature and gas composition of the plume flow field in a vacuum chamber.The results indicate that both the temperature and mass fraction of H_(2)O component in the flow field increase rapidly and then decrease smoothly,while the pressure fluctuates upward over time.Based on this conclusion,experimental optimization suggestions are proposed.The method provides a new approach for simulating the plume flow field in vacuum chamber,which may support for the subsequent design of relevant test schemes.

关 键 词：真空容器 羽流流场 滑移边界 计算流体力学 数值仿真 

分 类 号：V416.5[航空宇航科学与技术—航空宇航推进理论与工程] TP391.99[自动化与计算机技术—计算机应用技术]