Multiphysics simulation of fast transients with the FINIX fuel behaviour module

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

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    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 languageEnglish
    Title of host publicationTopFuel 2015 Conference Proceedings, Part I
    PublisherEuropean Nuclear Society (ENS)
    ISBN (Print)978-92-95064-23-2
    Publication statusPublished - 2015
    MoE publication typeA4 Article in a conference publication
    EventTopFuel 2015: Reactor Fuel Performance - Zürich, Switzerland
    Duration: 13 Sept 201517 Sept 2015


    ConferenceTopFuel 2015
    Abbreviated titleTopFuel
    Internet address


    • nuclear
    • nuclear fuel
    • modelling
    • multiphysics


    Dive into the research topics of 'Multiphysics simulation of fast transients with the FINIX fuel behaviour module'. Together they form a unique fingerprint.

    Cite this