Comparison of a semi-analytic and a CFD model uranium combustion to experimental data.

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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 ... continued below

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16 p.

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Clarksean, R. April 1998.

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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.

Physical Description

16 p.

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INIS; OSTI as DE00010713

Medium: P; Size: 16 pages

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  • 6th International Conference on Nuclear Engineering (ICONE 6), San Diego, CA (US), 05/10/1998--05/15/1998

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  • Report No.: ANL/TD/CP-96012
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10713
  • Archival Resource Key: ark:/67531/metadc618795

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • April 1998

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  • June 16, 2015, 7:43 a.m.

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  • April 7, 2017, 3:15 p.m.

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Clarksean, R. Comparison of a semi-analytic and a CFD model uranium combustion to experimental data., article, April 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc618795/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.