Year: 2016
Type: other
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.
Authors: Liang Chen, Bangcheng Ai, Siyuan Chen, Liang Guozhu
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2760966468