计算力学学报2023，Vol.40Issue(6)：963-971,9.DOI:10.7511/jslx20220528002
基于SPH法的返回舱入水载荷模拟分析
Simulation analysis on water entry loads of a space capsule based on SPH method
摘要
Abstract
In the early stage of water landing,a space capsule is faced with a large slamming.To study the slamming load received during landing,based on the smooth particle fluid dynamics(SPH)gas-liquid two-phase flow algorithm,the water entry process of the two models of a plate and a wedge is first simulated,and the experimental results in the relevant literature are compared to verify the effectiveness of the algorithm.On this basis,the water entry process in the space capsule is simulated.The results show that the calculation results of the two models are in good agreement with the experimental results in the relevant literature.The water velocity and tilt angle of the space capsule has a greater impact on the slamming and there is a secondary slamming phenomenon in the process.The slam load increases with the speed of the water entry.The peak of the first slamming load decreases with the increase of tilt angle,and the peak of the second slamming load increases first with the increase of tilt angle and then decreases.The results also show that the SPH gas-liquid two-phase flow algorithm can better simulate the water entry process of the space capsule.关键词
SPH两相流算法/返回舱/水上着落/二次砰击/倾角Key words
SPH two-phase flow algorithm/space capsule/water landing/second slamming/tilt angle分类
航空航天引用本文复制引用
丁宁,王鑫博..基于SPH法的返回舱入水载荷模拟分析[J].计算力学学报,2023,40(6):963-971,9.基金项目
中央高校基本科研业务费(3122020036)资助项目. （3122020036）
