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Prediction of heat transfer to a thin liquid film in plane and radially spreading flowsThe energy equation is incorporated in the solution algorithm of Rahman et al. (1990) to compute the heat transfer to a thin film in the presence or absence of gravity. For a plane flow under zero gravity, it is found that, for both isothermal and uniformly heated walls, the heat transfer coefficient gradually decreases downstream, with Nu-asterisk (the Nusselt number in terms of film height) remaining approximately constant except for regions very close to the entrance. In the case of radial flow under zero gravity, Nu-asterisk is found to decrease monotonically when the plane is uniformly heated. Two different flow regimes are identified in the presence of gravity for both plane and radial flows. The results of the study may be applicable to the design of space-based cooling systems.
Document ID
19900061352
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rahman, M. M.
(Wright State Univ. Dayton, OH, United States)
Faghri, A.
(Wright State Univ. Dayton, OH, United States)
Hankey, W. L.
(Wright State University Dayton, OH, United States)
Swanson, T. D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
August 1, 1990
Publication Information
Publication: ASME, Transactions, Journal of Heat Transfer
Volume: 112
ISSN: 0022-1481
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
90A48407
Funding Number(s)
CONTRACT_GRANT: NAG5-956
Distribution Limits
Public
Copyright
Other

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