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Chinese Journal of Space Science ›› 2020, Vol. 40 ›› Issue (6): 1066-1073.doi: 10.11728/cjss2020.06.1066

• Research Articles • Previous Articles    

Liquid-gas Interface Analysis of Propellant Tank Based on Surface Evolver

JIANG Zhijie1, WU Zongyu2, LIU Changqing3, HUANG Yiyong1, HAN Wei1   

  1. 1 National Innovation Institute of Defense Technology, Chinese Academy of Military Science, Beijing 100071;
    2 College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073;
    3 China Aerodynamics Research and Development Center, Mianyang 621000)
  • Received:2020-09-27 Revised:2020-10-12 Published:2020-12-09

Abstract: Propellant tank is an important part of spacecraft system, which is used for the management and transportation of propellant. Under the microgravity condition, the liquid-gas interface inside the propellant tank is curved. The investigation of the liquid-gas interface distribution characteristics is the premise to ensure the normal operation of the propellant tank. In this paper, Surface Evolver, an open-source surface evolution analysis software, is used to study the distribution characteristics of liquid-gas interface in spherical propellant tanks. The influences of filling ratio, contact angle, Bond number and other parameters on the liquid-gas interface are analyzed emphatically, and the variation law of the liquid-gas interface distribution in the propellant tank with each parameter is obtained. The results show that the shape of the liquid-gas interface of the spherical tank is more curved with the increase of the liquid filling ratio, and more flat with the increase of the contact angle or Bond number. Rapid analysis of the liquid-gas interface of the propellant tank is realized, which can provide guidance for the design of the propellant tank and the propellant management device.

Key words: Propellant tank, Free surface, Microgravity, Surface Evolver

CLC Number: