摘要
用计算流体力学/直接模拟蒙特卡洛(CFD/DSMC)的混合方法建立了火箭发动机羽流与固面之间相互作用的流场计算模型,通过与实验和模拟数据的比较,验证了该模型的正确性.将CFD/DSMC混合方法运用到月球探测器着陆过程中,发动机羽流对缓冲机构、月面的冲击力效应作用进行计算.结果表明,在着陆过程中,缓冲机构支架表面受到的最大压强为110Pa;月面最大压力为2kPa左右.计算结果为探测器的设计提供参考,并为分析月尘运动及月尘污染打下基础.
A calculation model of the interaction between rocket plume and moon surface was built using hybrid CFD/DSMC method. The correction of the model is achieved through comparing the results with other experimental data and simulation results. The comparison shows that the results are in good agree- ment and the model is credible. The plume of rocket coupled with moon surface and buffer structure was simulated, and the plume impingement effects on buffer structure and moon were analyzed. The results show that the maximum pressure is 110 Pa on buffer structure, and the maximum pressure on moon sur- face is 2 kPa. The force effect on buffer structure provides guides for design. Surface stress effect analysis is the foundation of lunar dust motion and pollution.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2012年第8期1310-1314,共5页
Journal of Shanghai Jiaotong University
基金
上海交通大学研究生创新能力培养专项基金
关键词
月球着落器
发动机
羽流冲击
力效应
计算流体力学
lunar lander
engine
plume impingement
force effect
computationl fluid dynamics
