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

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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.

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Abbreviations

ρ :

air density

t :

time

v :

velocity

c :

relative velocity in the reference field

b :

body force

δ ij :

Kronecker coefficient

u :

displacement

X(X i ):

Lagrangian coordinate

x(x i ):

Eulerian coordinate

ζ(ζ i ):

reference grid coordinate

n :

boundary normal vector

σ :

stress

τ :

non-aerodynamic outside force

p :

pressure

ϕ :

generalized variable

F:

flow field

S:

structure field

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Authors and Affiliations

  1. College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China

    Han Cheng  (程 涵) & Li Yu  (余 莉)

  2. Aviation Key Laboratory of Science and Technology on Aeronautical Life-Support, AVIC Aerospace Life-Support Industries Ltd., Xiangyang, 441000, Hubei Province, P. R. China

    Xin-hua Zhang  (张鑫华) & Meng Chen  (陈 猛)

Authors
  1. Han Cheng  (程 涵)
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  2. Xin-hua Zhang  (张鑫华)
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  3. Li Yu  (余 莉)
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  4. Meng Chen  (陈 猛)
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Corresponding author

Correspondence to Li Yu  (余 莉).

Additional information

Project supported by the National Natural Science Foundation of China (No. 11172137) and the Aeronautical Science Foundation of China (No. 20122910001)

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Cheng, H., Zhang, Xh., Yu, L. et al. Study of velocity effects on parachute inflation performance based on fluid-structure interaction method. Appl. Math. Mech.-Engl. Ed. 35, 1177–1188 (2014). https://doi.org/10.1007/s10483-014-1852-6

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  • DOI: https://doi.org/10.1007/s10483-014-1852-6

Key words

Chinese Library Classification

2010 Mathematics Subject Classification

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