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首页> 外文期刊>International Journal of Heat and Mass Transfer >Thermal analysis of a cryogenic liquid acquisition device under autogenous and non-condensable pressurization schemes
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Thermal analysis of a cryogenic liquid acquisition device under autogenous and non-condensable pressurization schemes

机译：自热和非冷凝加压方案下的低温液体采集装置的热分析

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This paper presents thermal analysis ofa325×2300 mesh LAD sample that was tested over a wide range of liquid methane temperatures (106-160 K) and pressures (0.0618-1.78 MPa) for a LAD using both autogenous (gaseous methane) and noncondensible (gaseous helium or nitrogen) pressurization schemes. To compare between schemes, screen interfacial temperatures, screen Reynolds numbers, condensation and/or evaporation mass flow rates at breakdown, and heat fluxes produced at the screen are computed as a function of liquid temperature and pressure. Condensation and evaporation rates are also computed using kinetic theory to allow comparison. Each parameter has a profound impact on surface tension and thus the performance of the LAD screen. The understanding gained here will be used to determine optimal propellant pressure and temperature operating regimes and will help mission designers determine whether autogenous pressurization is feasible for future space missions.
机译：本文介绍了对a325×2300目LAD样品的热分析，该样品在自燃性（气态甲烷）和非冷凝性（气态氦或氮）加压方案。为了比较方案，筛分界面温度，筛分雷诺数，击穿时的凝结和/或蒸发质量流量以及在筛分处产生的热通量均根据液体温度和压力进行计算。还使用动力学理论计算冷凝和蒸发速率以进行比较。每个参数都会对表面张力以及LAD筛的性能产生深远影响。此处获得的理解将用于确定最佳的推进剂压力和温度操作方案，并将帮助任务设计者确定自体加压对于未来的太空任务是否可行。

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