The approaches used in the SAFR/V1 module modeling the thermal destruction of fuel pins in fast reactors for calculating in integrated code EVKLID/V2 the melting of fuel pins and solidification of the formed melt are described. The enthalpy formulation of the heat-conduction equation is used. The numerical scheme used for the heat-conduction equation in performing the calculations is presented. The realized boundary conditions as well as a model of the gas gap in a fuel pin are described. The module’s capability of modeling heat propagation, including in the presence of a phase transition, is verified on the basis of analytical tests.
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Translated from Atomnaya Energiya, Vol. 124, No. 3, pp. 123–127, March, 2018.
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Usov, E.V., Butov, A.A., Chukhno, V.I. et al. Fuel Pin Melting in a Fast Reactor and Melt Solidification: Simulation Using the SAFR/V1 Module of the EVKLID/V2 Integral Code. At Energy 124, 147–153 (2018). https://doi.org/10.1007/s10512-018-0389-2
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DOI: https://doi.org/10.1007/s10512-018-0389-2