航空学报2025，Vol.46Issue(7)：70-80,11.DOI:10.7527/S1000-6893.2024.30762
部分充气浮空气球伞降过程流固耦合仿真
Fluid-structure interaction simulation of descending of partially inflated balloon parachute
摘要
Abstract
In the deployment process of the Venus balloon probe,the balloon needs to be decelerated by the para-chute to inflate in the air.The aerodynamic drag of the parachute-balloon combination is a factor that needs to be con-sidered in the scheme design.A fluid-structure interaction numerical model is established for the parachute-balloon combination.In this model,the flow field is solved using the Arbitrary Lagrange-Euler(ALE)method,and the fluid mesh follows the motion of the parachute-balloon combination.The penalty function method is used to handle the fluid-structure interaction between the flow field and the parachute and balloon,as well as the structural self-contact of the parachute and balloon.The internal pressure and volume changes of the balloon are solved by the Control Volume(CV)method.The partially inflated balloon shape is obtained through compression by setting the initial internal pres-sure of the balloon.The buoyancy of the balloon is achieved by applying a pressure difference that varies with height on the surface of the balloon.Using this model,simulations are conducted on the descending process of partially in-flated balloon parachute in the atmospheric environment of Venus,and the impact of changes in balloon inflation rates on the calculation results is analyzed.The calculation results indicate that the balloon shape undergoes slight changes over time under the influence of the flow field,and the balloon rotates.The drags of the balloon and parachute fluctu-ate significantly over time,and their fluctuation frequencies are basically the same.The inflation rate change has no significant effect on the fluctuation frequency.As the inflation rate increases,the average drag of the balloon in-creases,while the average drag of the parachute remains basically unchanged.The areas of the balloon sorted in or-der of stress from high to low are as follows:flange fringes and wrinkles of the balloon,the filled area at the top of the balloon,and depressed areas of the balloon.关键词
流固耦合/金星/浮空气球/Arbitrary Lagrange-Euler法/降落伞Key words
fluid-structure interaction/Venus/balloon/Arbitrary Lagrange-Euler(ALE)method/parachute分类
航空航天引用本文复制引用
刘宇,廖航,吴卓,舒燕,曹旭..部分充气浮空气球伞降过程流固耦合仿真[J].航空学报,2025,46(7):70-80,11.基金项目
民用航天技术预先研究项目(D050201) Pre-research Project on Civil Aerospace Technologies(D050201) （D050201）
