Flow of superfluid helium in tubes with heated wallsThe equations for superfluid helium flowing through a straight tube with heated walls are integrated. The model equations are based on those of Landau as modified for superfluid turbulence by Gorter and Mellink (1949). The model is implemented by the program SUPERFLOW which runs on a personal computer. The effect of the heating level on the mass flux, the energy flux, and the pressure and temperature profiles is investigated. The four types of profiles which occur without sidewall heating are also found with heated walls. The progression through these four types is shown to depend primarily on the dimensionless parameter, defined previously to characterize the unheated profiles, and a dimensionless ratio of heat fluxes. The pressure and temperature maxima which rise well above the boundary values increase significantly with sidewall heating. Approximate design equations for estimating the mass flux and the profiles are presented. The physical basis of the results is discussed. These results are useful in the design of optimal cooling loops and other superfluid flow systems.
Document ID
19930064583
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Snyder, H. A. (NASA Headquarters Washington, DC United States)
Mord, A. J. (Ball Electro-Optics/Cryogenics Div.; Colorado Univ. Boulder, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Advances in cryogenic engineering. Vol. 37A - Proceedings of the 1991 Cryogenic Engineering Conference, Univ. of Alabama, Huntsville, June 11-14, 1991 (A93-48578 20-37)
Publisher: Plenum Press
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
93A48580
Funding Number(s)
CONTRACT_GRANT: NAGW-1388
Distribution Limits
Public
Copyright
Other
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IDRelationTitle19930064581Collected WorksAdvances in cryogenic engineering. Vols. 37A & 37B - Proceedings of the 1991 Cryogenic Engineering Conference, Univ. of Alabama, Huntsville, June 11-14, 1991