南京航空航天大学学报2017，Vol.49Issue(6)：845-850,6.DOI:10.16356/j.1005-2615.2017.06.014
气动加热影响下的液氧储罐内温度分层与相变特性仿真分析
Temperature Stratification and Phase Transition in Liquid Oxygen Tank with Aerodynamic Heating Boundary
摘要
Abstract
Pre-pressurization rise process of the liquid oxygen stored in a tank is simulated through 3D CFD simulations . The phase transformation rate and temperature stratification of liquid oxygen are specified . The results suggest that evaporation rate of the liquid oxygen is fluctuating around 0 .0126 kg/s under the aerodynamic heating boundary condition .The liquid oxygen boiling rate near the wall is also investigated and averagely reaches 0 .086 kg/s in the whole process ,which is consistent with the tank heat leakage .The temperature stratification is observed when the high-temperature gas pres-surization enters the tank by a diffuser .The liquid oxygen temperature in the gas-liquid interface increa-ses from 89 .51 K to 93 .61 K .The average increasing rate of the liquid temperature is 0 .022 K/s for 183 s after the pre-pressurization .关键词
液氧储箱/气动加热/蒸发和沸腾速率/温度分层Key words
liquid oxygen tank/aerodynamic heating/evaporation and boiling rate/temperature stratifica-tion分类
航空航天引用本文复制引用
汪艳,孙培杰,耑锐,匡以武,王文..气动加热影响下的液氧储罐内温度分层与相变特性仿真分析[J].南京航空航天大学学报,2017,49(6):845-850,6.基金项目
上海航天SAST基金(SAST201414)资助项目. （SAST201414）
