Damping computation of liquid sloshing in containers aboard spacecraft |
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Authors: | Baoyin Hexi Li Junfeng Gao Yunfeng Wang Zhaolin |
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Institution: | (1) Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, China;(2) Dept. of Engineering Mechanics, Lwate University, 020-8551 Morioka, Japan |
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Abstract: | Under the non-rotating assumption, a method for the calculation of damping of fuel sloshing with small amplitude in containers
aboard spacecraft is proposed in the present paper. And we have presented an eigen-value equation for sloshing damping and
frequency computation. This equation may be solved by Ritz or Galerkin methods for a container of simple geometry or by finite
element method for a container of arbitrary geometric shape even with rigid baffles. The simulated results show that the equivalent
damping coefficients is directly proportional to fuel's viscosity, whereas it almost exhibits no influence on sloshing frequencies.
The drawback of the proposed method lies in expensive computation cost. Thus far, it hasn't yet be applied to a container
with elastic baffles.
The project supported by the National Natural Science Foundation of China (10172048) |
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Keywords: | sloshing dynamics sloshing damper sloshing frequency liquid filled spacecraft |
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