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Pressurized expulsion of nonisothermal single-phase cryogenThe performance of single-phase storage and expulsion systems as affected by temperature variations within the stored cryogen which are generated during heat transfer is discussed. Peculiar operating responses are indicated by spontaneous changes in fluid pressure which accompany g level changes, increased heater surface temperature, and durations of pressure cycles which differ considerably from that which is computed for an isothermal cryogen. The nonisothermal characteristics are predicted with a numerical model which includes the simultaneous solution of the time dependent conservation equations of mass, energy, and momentum in two space dimensions of Cartesian coordinates for boundary conditions which approximate those of the flight cryogenic system. The methodology of the numerical method and some comparisons between the predictions and the Apollo 12 flight data are included.
Document ID
19720016139
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Forester, C. K. (Boeing Co. Seattle, WA, United States)
Date Acquired
August 6, 2013
Publication Date
May 1, 1971
Publication Information
Publication: NASA. Manned Spacecraft Center MSCCryog. Symp. Papers
Subject Category
Propellants
Accession Number
72N23789
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19720016135Collected WorksMSC Cryogenics Symposium papers
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