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Comparison of a semi-analytic and a CFD model uranium combustion to experimental data [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy, 1998.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
16 pages : digital, PDF file
Additional Creators:
Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
Two numerical models were developed and compared for the analysis of uranium combustion and ignition in a furnace. Both a semi-analytical solution and a computational fluid dynamics (CFD) numerical solution were obtained. Prediction of uranium oxidation rates is important for fuel storage applications, fuel processing, and the development of spent fuel metal waste forms. The semi-analytical model was based on heat transfer correlations, a semi-analytical model of flow over a flat surface, and simple radiative heat transfer from the material surface. The CFD model numerically determined the flowfield over the object of interest, calculated the heat and mass transfer to the material of interest, and calculated the radiative heat exchange of the material with the furnace. The semi-analytical model is much less detailed than the CFD model, but yields reasonable results and assists in understanding the physical process. Short computation times allowed the analyst to study numerous scenarios. The CFD model had significantly longer run times, was found to have some physical limitations that were not easily modified, but was better able to yield details of the heat and mass transfer and flow field once code limitations were overcome.
Report Numbers:
E 1.99:anl/td/cp-96012
anl/td/cp-96012
Subject(s):
Other Subject(s):
Note:
Published through SciTech Connect.
04/01/1998.
"anl/td/cp-96012"
6th International Conference on Nuclear Engineering (ICONE 6), San Diego, CA (US), 05/10/1998--05/15/1998.
Clarksean, R.
Funding Information:
W-31109-ENG-38
View MARC record | catkey: 14760196