国防科技大学学报2013，Vol.35Issue(1)：48-52,5.
降落伞充气过程中“瓶颈”效应
A study on "bottleneck" phenomenon during parachute inflation
摘要
Abstract
The inflation process of large-scale or extra large-scale parachute was investigated. The Arbitrary Lagrangian Eulerian ( ALE) Method-a Fluid-Structure Interaction (FSI) model, was used to simulate the inflation process of a main parachute (a ringsail parachute, which was used in manned spacecraft) in an infinite mass situation. The dynamic relationship between canopy shape and flow field was obtained, and the adverse inflation phenomena such as asymmetric inflation and whip were observed in simulation results. The "bottleneck" phenomenon in inflation process was found and verified by physical tests. Based on the analysis of calculation results, it is found that the large canopy area, the complicated canopy structure or high inflation speed can block the air mass into the parachute, which can cause the " bottleneck" phenomenon. But the necessary occurrence conditions of the phenomenon need to be studied in future. The present work is significant for explaining parachute working mechanism and preventing its failure.关键词
降落伞/充气过程/ALE方法/流固耦合Key words
parachute/ inflating process/ arbitrary lagrangian eulerian/method-a fluid-structure interaction分类
航空航天引用本文复制引用
程涵,余莉,夏刚..降落伞充气过程中“瓶颈”效应[J].国防科技大学学报,2013,35(1):48-52,5.基金项目
国家自然科学基金资助项目(11172137) （11172137）
航空科学基金项目(20122910001) （20122910001）
