化工学报2016，Vol.67Issue(z2)：58-63,6.DOI:10.11949/j.issn.0438-1157.20161372
长期在轨运行低温液氧贮箱内汽化过程的模拟
Simulation of vaporization process inside cryogenic liquid oxygen tank for long-term storage in orbit
摘要
Abstract
Pressure,temperature,vapor-liquid interface and other parameters of a liquid oxygen tank for long-term storage in orbit are simulated through CFD (computational fluid dynamics ) method.The average heat leak of the tank in orbit is calculated,and it is 6.8 4 W· m - 2.The tank is simulated for 5 days,and the result indicates that the vapor region formed at the top of the tank is unstable,and the temperature of the liquid region is uniform as the thermal stratification is weakened by the high-speed vapor mass inside the liquid region.During the storage process in orbit, the temperature increase rate of the liquid is 1.1 8 K· d - 1 ,and the pressure increase rate of the tank is 2 3.7 kPa· d - 1.According to the flow field inside the tank,the homogeneous model is established, and results calculated by the model are coincided with the CFD method.Therefore,the homogeneous model is favorable for the prediction of pressure,evaporation and other parameters in the cryogenic propellant tank for long-term storage in orbit.关键词
液氧/贮箱/传热/汽化/相变/微重力/数值模拟Key words
liquid oxygen/tank/heat transfer/vaporization/phase change/microgravity/numerical simulation分类
航空航天引用本文复制引用
齐超,孙培杰,耑锐,王文..长期在轨运行低温液氧贮箱内汽化过程的模拟[J].化工学报,2016,67(z2):58-63,6.基金项目
上海航天科技创新基金项目(SAST201414)。 （SAST201414）
