Analysis of LMFBR containment response to an HCDA using a multifield Eulerian code. [MICE code]

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During a hypothetical core disruptive accident (HCDA), a core meltdown may cause the fuel cladding to rupture and the fuel fragments to penetrate into the sodium coolant. The heat in the molten fuel may cause the liquid sodium to boil, changing its phase. The interactions between materials are so complicated that a single-material model with homogenized material properties is not adequate. In order to analyze the above phenomena more realistically, a Multifield Implicit Continuous-Fluid Eulerian containment code (MICE) is being developed at Argonne National Laboratory (ANL) to solve the multifield fluid-flow problems in which the interpenetrations of materials, heat transfer, … continued below

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13 pages

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Chu, H.Y. & Chang, Y.W. January 1, 1977.

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During a hypothetical core disruptive accident (HCDA), a core meltdown may cause the fuel cladding to rupture and the fuel fragments to penetrate into the sodium coolant. The heat in the molten fuel may cause the liquid sodium to boil, changing its phase. The interactions between materials are so complicated that a single-material model with homogenized material properties is not adequate. In order to analyze the above phenomena more realistically, a Multifield Implicit Continuous-Fluid Eulerian containment code (MICE) is being developed at Argonne National Laboratory (ANL) to solve the multifield fluid-flow problems in which the interpenetrations of materials, heat transfer, and phase changes are considered in the analysis. The hydrodynamics of the MICE code is based upon the implicit multifield (IMF) method developed by Harlow and Amsden. A partial donor-cell formulation is used for the calculation of the convective fluxes to minimize the truncation errors, while the Newton-Raphson method is used for the numerical iterations. An implicit treatment of the mass convection together with the equation of state for each material enables the method to be applicable to both compressible and incompressible flows. A partial implicit treatment of the momentum-exchange functions allows the coupling drag forces between two material fields to range from very weak to those strong enough to tie the fields completely. The differential equations and exchange functions used in the MICE code, and the treatment of the fluid and structure interactions as well as the numerical procedure are described. Two sample calculations are given to illustrate the present capability of the MICE code.

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13 pages

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Dep. NTIS, PC A02/MF A01.

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  • 4. international conference on structural mechanics in reactor technology, San Francisco, CA, USA, 15 Aug 1977

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  • Report No.: CONF-770807-53
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 5271735
  • Archival Resource Key: ark:/67531/metadc1063683

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  • January 1, 1977

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  • Feb. 4, 2018, 10:51 a.m.

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  • June 25, 2019, 4:05 p.m.

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Chu, H.Y. & Chang, Y.W. Analysis of LMFBR containment response to an HCDA using a multifield Eulerian code. [MICE code], article, January 1, 1977; Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1063683/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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