Multiphysics simulation of fast transients with the FINIX fuel behaviour module

Timo Ikonen; Elina Syrjälahti; Ville Valtavirta; Henri Loukusa; Jaakko Leppänen; Ville Tulkki

Multiphysics simulation of fast transients with the FINIX fuel behaviour module

Timo Ikonen (Corresponding Author), Elina Syrjälahti, Ville Valtavirta, Henri Loukusa, Jaakko Leppänen, Ville Tulkki

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

FINIX is a recently developed fuel behaviour module that is designed to provide “simple but sufficient” descriptions of the most essential fuel behaviour phenomena in multiphysics simulations. In such simulations, it is possible to obtain significant improvement in the feedback to neutronics or thermal hydraulics modelling even with a relatively simple fuel performance model. In this work, FINIX is used as an internal fuel behaviour module both in reactor physics and in reactor dynamics codes to simulate coupled behaviour in fast transient scenarios. With the Monte Carlo reactor physics code Serpent we model a prompt transient in a VVER-1000 pin cell, and with the reactor dynamics code HEXTRAN, a control rod ejection accident in a VVER-440 reactor.

Original language	English
Article number	37
Number of pages	8
Journal	EPJ Nuclear Sciences & Technologies
Volume	2
Publication status	Published - 8 Sept 2016
MoE publication type	A1 Journal article-refereed

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https://doi.org/10.1051/epjn/2016032Licence: CC BY

Cite this

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abstract = "FINIX is a recently developed fuel behaviour module that is designed to provide “simple but sufficient” descriptions of the most essential fuel behaviour phenomena in multiphysics simulations. In such simulations, it is possible to obtain significant improvement in the feedback to neutronics or thermal hydraulics modelling even with a relatively simple fuel performance model. In this work, FINIX is used as an internal fuel behaviour module both in reactor physics and in reactor dynamics codes to simulate coupled behaviour in fast transient scenarios. With the Monte Carlo reactor physics code Serpent we model a prompt transient in a VVER-1000 pin cell, and with the reactor dynamics code HEXTRAN, a control rod ejection accident in a VVER-440 reactor.",

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AU - Syrjälahti, Elina

AU - Valtavirta, Ville

AU - Loukusa, Henri

AU - Leppänen, Jaakko

AU - Tulkki, Ville

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AB - FINIX is a recently developed fuel behaviour module that is designed to provide “simple but sufficient” descriptions of the most essential fuel behaviour phenomena in multiphysics simulations. In such simulations, it is possible to obtain significant improvement in the feedback to neutronics or thermal hydraulics modelling even with a relatively simple fuel performance model. In this work, FINIX is used as an internal fuel behaviour module both in reactor physics and in reactor dynamics codes to simulate coupled behaviour in fast transient scenarios. With the Monte Carlo reactor physics code Serpent we model a prompt transient in a VVER-1000 pin cell, and with the reactor dynamics code HEXTRAN, a control rod ejection accident in a VVER-440 reactor.

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Multiphysics simulation of fast transients with the FINIX fuel behaviour module

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