Numerical simulation of the flow distribution in a trap of a propellant tank with micro gravity

Asian Working Group- IAHR's Symposium on Hydraulic Machinery and Systems

Liu, J.T.^1 ; Li, M.L.^2 ; Li, X.P.^3 ; Chen, L.^1 ; Lin, X.R.^1

Beijing Institute of Control Engineering, China Aerospace and Technology Corporation, Beijing

100190, China^1

Beijing Institute of Spacecraft Environment Engineering, Beijing

100094, China^2

Shengli Petroleum Administration Power Management Corporation, Sinopec Group, Shandong

257000, China^3

关键词: Closed structures;    Cone angle;    Flow distribution;    Gravity conditions;    Optimal angle;    Propellant tank;    Surface tension force;    Zero-gravity conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/163/1/012083/pdf
DOI  :  10.1088/1755-1315/163/1/012083

来源: IOP

【 摘 要 】

A trap device is defined as a closed structure which holds and provides a specific quantity of propellant using the surface tension forces. A trap in a vane-type PMD is investigated. The influence of the cone angle of the trap and flow distributions with different conditions in space are investigated. The VOF model could be used to simulate the flow distribution in a trap with zero or small gravity condition. The optimal angle for the trap is α=45° and it has the best result of expulsion efficiency of the propellant tank. The trap can be full filled with propellant after 21 second at zero gravity condition and 37 second at north-south insurance condition. A gas bubble left in the trap at the end of the refilling process. There is no flow distribution change in the trap when the trap is full filled at reverse gravity condition and sink condition.