Open AccessAnalytical investigation of the fuel rod destruction and melt relocation along the surface of the fuel rod
Author(s) -
E. V. Usov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1382/1/012146
Subject(s) - cladding (metalworking) , thermal , relocation , mechanics , materials science , mechanical engineering , computer science , engineering , thermodynamics , physics , metallurgy , programming language
To simulate fuel rod thermal destruction, analytical approaches were developed. Approaches are based on solving the Stefan problem and solving the equation of motion of the molten materials. The paper contains a brief description of the ways to obtain analytical solutions and applicability limits of the solutions. Calculation of the mass of the melt that left the central part of the fuel rod is presented. Proposed analytical solutions can be used only to simulate the first stage of the accidents from melting inception of the cladding to destruction of the whole fuel assembly.