期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 74, 期 -, 页码 403-413出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2014.03.036
关键词
Cryogenic; Liquid acquisition device; Autogenous pressurization; Interfacial temperature; Condensation rate; Evaporation rate; Subcooled liquid
资金
- Cryogenic Fluid Management Project at NASA Glenn Research Center under Exploration Systems Mission Directorate at NASA Headquarters
This paper presents thermal analysis of a 325 x 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. Published by Elsevier Ltd.
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