Abstract

The basic approaches used in the SAFR/V1 module of the integral code EVKLID/V2 to simulate the movement of the melt formed upon melting of fuel elements are presented. The system of mass, energy, and momentum conservation equations used to simulate the movement of melt is presented. Special attention is devoted to methods of numerical approximation of the equations as well as to the solution of problems involving smearing of the solution at the melt boundary. The realized methods of stimulating the motion of melt have been verified on the basis of tests with known analytical solutions.

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