CIESC Journal ›› 2018, Vol. 69 ›› Issue (S2): 61-67.doi: 10.11949/j.issn.0438-1157.20181055

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Coupled thermal dynamic performance in cryogenic liquid oxygen tank under slosh excitation

LIU Zhan1,2, FENG Yuyang2,3, LEI Gang1, LI Yanzhong1,3   

  1. 1 State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing 100028, China;
    2 School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;
    3 School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
  • Received:2018-09-25 Revised:2018-09-30
  • Supported by:

    supported by the National Natural Science Foundation of China (51806235), the China Postdoctoral Science Foundation (2018M630625) and the Research Fund of State Key Laboratory of Technologies in Space Cryogenic Propellants (SKLTSCP1812).


The computational fluid dynamics (CFD) technique is used to investigate the thermal-dynamic coupled process in cryogenic liquid oxygen tank under the slosh excitations. The influences of the external environmental heat leak and the phase change occurring on the liquid-vapor interface are considered in detail. The slosh force, fluid slosh momentum, tank pressure, and fluid temperature distribution in tank caused by the external excitation are analyzed. The results show that both the slosh force suffered by tank and fluid slosh momentum have reducing trends with fluctuations under the external sinusoidal excitation. Influenced by the external slosh, the connection area between the subcooled liquid and the superheated vapor increases, so the superheated vapor is greatly cooled by the liquid, and the tank pressure decreases almost linearly with time. As for the fluid temperature monitors, while they are close to the liquid-vapor interface, the fluid sloshing has an obvious effect on the variation of monitors' temperature. In general, the temperature distribution in the tank is formed with the high temperature region in upper and low temperature region in bottom, and the high temperature in the external region and the low temperature in the interior. While as located on the top of tank, the vapor test points have a large temperature fluctuation, influenced by the top dished-head. For the bottom liquid temperature monitors, their values are larger than parts of liquid test points' temperature, with the direct heat transfer from the bottom dished-head wall.

CLC Number: 

  • V511

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