Study of parachute inflation process using fluid–structure interaction method

查看全文 作　　者：Yu [1]Li;Cheng [1]Han;Zhan Ya'[1]nan;Li [1]Shaoteng

机构地区：[1]College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics

出　　处：《Chinese Journal of Aeronautics》索引2014年第27卷第2期,共8页

基　　金：co-supported by the National Natural Science Foundation of China (No. 11172137);the Aeronautical Science Foundation of China (No. 20122910001) 摘　　要：A direct numerical modeling method for parachute is proposed firstly, and a model for the star-shaped folded parachute with detailed structures is established. The simplified arbitrary Lagrangian–Eulerian fluid–structure interaction(SALE/FSI) method is used to simulate the inflation process of a folded parachute, and the flow field calculation is mainly based on operator splitting technique. By using this method, the dynamic variations of related parameters such as flow field and structure are obtained, and the load jump appearing at the end of initial inflation stage is captured. Numerical results including opening load, drag characteristics, swinging angle, etc. are well consistent with wind tunnel tests. In addition, this coupled method can get more space–time detailed information such as geometry shape, structure, motion, and flow field. Compared with previous inflation time method, this method is a completely theoretical analysis approach without relying on empirical coefficients, which can provide a reference for material selection, performance optimization during parachute design. 关键词：充气过程降落伞耦合方法数值模拟方法流场计算充气时间拉格朗日流固耦合

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Study of parachute inflation process using fluid–structure interaction method

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