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Heat transfer from internally-heated molten UO/sub 2/ pools. [PWR; BWR] [electronic resource].

Published
Argonne, Ill. : Argonne National Laboratory, 1978.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 11 : digital, PDF file
Additional Creators
Argonne National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Experimental measurements of heat transfer from internally heated pools of molten UO/sub 2/ have been obtained for two cell sizes: 10 cm x 10 cm and 20 cm x 20 cm. The experiments with the large cell have supported a previous conclusion from early small data that the measured downward heat fluxes are higher than would be expected on the basis of considerations of thermal convection. A convective model underpredicts the downward heat fluxes by a factor of 2.5 to 4.5 for all but one early experiment. Arbitrary assumptions of increased thermal conductivity do not account for the discrepancy. A single model based on internal thermal radiation heat transfer is able to account for the high values. The model uses the optically thick Rosseland approximation. Because of this, it is tentatively concluded that thermal radiation plays a dominant role in controlling the heat transfer from internally heated molted fuel.
Report Numbers
E 1.99:conf-781079-2
conf-781079-2
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Note
Published through SciTech Connect.
10/10/1978.
"conf-781079-2"
Postaccident heat removal information exchange, Ispra, Italy, 10 Oct 1978.
Cook, C.; Baker, L. Jr.; Stein, R.P.; Gunther, W.H.
Funding Information
W-31-109-ENG-38
View MARC record | catkey: 14371628