Analysis of different factors on the features of thermal destruction of a fuel pin

Abstract The presented work studies the influence of various factors that affect the specific features of fuel pins melting. For this purpose, fuel pins with different geometries and energy release are considered. Numerical simulation of melting is carried out using a program module for calculating...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 2119; no. 1; pp. 12099 - 12103
Main Authors Usov, E V, Saikina, T A, Chuhno, V I
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.12.2021
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Summary:Abstract The presented work studies the influence of various factors that affect the specific features of fuel pins melting. For this purpose, fuel pins with different geometries and energy release are considered. Numerical simulation of melting is carried out using a program module for calculating the destruction of fuel rods. Comparison with theoretical calculations is made. The analysis of the convergence of calculations with respect to the time step value and the number of calculated cells along the radius and height is carried out. As a result of work with the use of numerical methods, the characteristic times of destruction of fuel elements during an accident with a loss of coolant flow rate (an accident of the ULOF type) and the dependence of weight loss on time are obtained under various conditions.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2119/1/012099