Volume 39 Issue 6
Nov.  2019
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LIN Kecheng, SONG Xiaojuan. Analyses on Self-reduce Liquid Sloshing in Double Tank[J]. Chinese Journal of Space Science, 2019, 39(6): 824-830. doi: 10.11728/cjss2019.06.824
Citation: LIN Kecheng, SONG Xiaojuan. Analyses on Self-reduce Liquid Sloshing in Double Tank[J]. Chinese Journal of Space Science, 2019, 39(6): 824-830. doi: 10.11728/cjss2019.06.824

Analyses on Self-reduce Liquid Sloshing in Double Tank

doi: 10.11728/cjss2019.06.824
  • Received Date: 2018-10-26
  • Rev Recd Date: 2019-08-12
  • Publish Date: 2019-11-15
  • Researches have shown that when spacecraft is in orbit, liquid fuel sloshing is one of the main factors that destroy the stability of spacecraft and threaten the safety of space missions. It is necessary to take research on liquid sloshing. Self-reduce sloshing is common in spaceflight missions, which is more complex than enforced sloshing. In this paper, the self-reduce sloshing characters of liquid fuel in the double parallel tanks are studied by FLUENT software and calculation formulas. Based on the Finite Volume Method and the two-phase laminar flow model, the effects of sloshing force, torque and wave height which liquid fuel acts on the tank's side wall and bottom wall under different gravities are analyzed. Each force and torque acts on side wall and bottom wall can be divided into horizontal and vertical direction, and components on both directions are obtained. The parameters of liquid sloshing equivalent model are calculated. The calculation formula of parameters of equivalent dynamic model is derived by analyzing method. By comparing the simulation results and analytical solutions, the feasibility of the simulation calculation is proved. The simulation method would provide a theoretical basis for dynamic analysis of spacecraft with multiple storage tanks.

     

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