Simulation of self-pressurization in cryogenic propellant tank
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Date
Authors
Chen, Liang
Ai, Bangcheng
Chen, Siyuan
Liang, Guozhu
Journal Title
Journal ISSN
Volume Title
Publisher
HEFAT
Abstract
In order to predict the pressure and investigate the
interrelation among the physical processes in cryogenic
propellant tanks, a 2D axial symmetry Volume-of-Fluid (VOF)
computational fluid dynamic (CFD) model including a liquid
propellant phase and a mixture real gas phase is established.
The propellant phase change model is based on the assumption
of thermodynamic equilibrium. Two comparisons between the
simulation results and the self-pressurization tests of two
different liquid hydrogen tanks are made to validate the model.
And the deviations of pressure in the tanks are 2.7%~6.1%. The
results indicate that the evaporation induced by the initial
overheat is the key factor of the pressure rising in the liquid
hydrogen tank at the beginning of self-pressurization, but has
less influence when the tank becomes saturated.
Description
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.
Keywords
Self-pressurization, Cryogenic propellant tank