Study of velocity effects on parachute inflation performance based on fluid-structure interaction method

doi:10.1007/s10483-014-1852-6

Abstract

Abstract: The inflation of a five-ring cone parachute with the airflow velocity of 18 m/s is studied based on the simplified arbitrary Lagrange Euler (SALE)/fluid-structure interaction (FSI) method. The numerical results of the canopy shape, stability, opening load, and drag area are obtained, and they are well consistent with the experimental data gained from wind tunnel tests. The method is then used to simulate the opening process under different velocities. It is found that the first load shock affected by the velocity often occurs at the end of the initial inflation stage. For the first time, the phenomena that the inflation distance proportion coefficient increases and the dynamic load coefficient decreases, respectively, with the increase in the velocity are revealed. The above proposed method is competent to solve the large deformation problem without empirical coefficients, and can collect more space-time details of fluid-structure-motion information when it is compared with the traditional method.

Key words: fluid-structure interaction (FSI), inflation performance, parachute, empirical coefficient, opening shock load, velocity

2010 MSC Number:

V244.21

Han CHENG;Xin-hua ZHANG;Li YU;Meng CHEN. Study of velocity effects on parachute inflation performance based on fluid-structure interaction method. Applied Mathematics and Mechanics (English Edition), 2014, 35(9): 1177-1188.

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