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The stochastic finite element method for nuclear applications / José David Arregui Mena, Lee Margetts, Llion Evans, D. V. Griffiths, Anton Shterenlikht, Luis Cebamanos, Paul M Mummery

Eccomas Proceedia, Pages: 2471 - 2483

Swansea University Author: Llion Evans

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DOI (Published version): 10.7712/100016.1975.9348

Abstract

Nuclear materials are subjected to demanding environments, encountering hightemperature gradients and fast neutron fluxes that gradually damage its structure and thereforechange the material properties. Some components of a nuclear reactor determine its lifetime,such as the graphite core and steel p...

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Published in: Eccomas Proceedia
Published: Crete Island, Greece VII European Congress on Computational Methods in Applied Sciences and Engineering 2016
Online Access: https://www.eccomasproceedia.org/conferences/eccomas-congresses/eccomas-congress-2016/1975
URI: https://cronfa.swan.ac.uk/Record/cronfa40000
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Abstract: Nuclear materials are subjected to demanding environments, encountering hightemperature gradients and fast neutron fluxes that gradually damage its structure and thereforechange the material properties. Some components of a nuclear reactor determine its lifetime,such as the graphite core and steel pressure vessel for fission reactors. In case of fusionreactors the tungsten divertor is expected to be replaced several times during its lifespan. Allthese materials contain defects and spatial material variability that may contribute to thefailure of the component. The Stochastic Finite Element Method or a Random Finite ElementMethod was chosen in this research to model the spatial material variability in nucleargraphite and other key components of nuclear reactors. This research describes how a directMonte Carlo Simulation approach was adapted to simulate the calibration of a random fieldand the modelling of these defects for nuclear graphite. It is also suggested that this methodology can be applied to fusion reactor modelling
College: College of Engineering
Start Page: 2471
End Page: 2483