Finite element and boundary element solution of nuclear waste repository thermal dimensioning problem
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Date
2012-01-01
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Technická univerzita v Liberci, Česká republika
Abstract
We solve the thermal dimensioning problem of the deep geological spent nuclear fuel repository, which means to estimate the maximum temperature in the repository caused by the heat generation of the spent fuel. We use a combination of the boundary element method for the exterior problem of heat discharge to the infinity and finite element method for a near- field thermal problem with a boundary condition expressed by the far-field problem solution. This combination is implemented within the simulation software ANSYS as the “far-field element”. The far-field element solution confirmed to well represent the heat discharge, in comparison with the variant of a standard FEM far-field problem solution and conventional boundary conditions (constant temperature or zero heat flow).
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Subject(s)
heat conduction, numerical simulation, far-field element, multiscale, ANSYS
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ISSN
1803-9782