Internal neutronics-temperature coupling in serpent 2: Reactivity differences resulting from choice of material property correlations

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    Abstract

    This paper describes the unique way of simultaneously solving the power and temperature distributions of a nuclear system with the Monte Carlo neutron transport code Serpent 2. The coupled solution is achieved through the implementation of an internal temperature solver and material property correlations in the code. The program structure is reviewed concerning the temperature solver and the internal correlations as well as the internal coupling between these two and the neutron transport part. To estimate the reactivity differences resulting from correlation choices a simple pin-cell case has been calculated. It is established, that some correlation choices may result in difference in reactivity of approximately 100 pcm.
    Original languageEnglish
    Title of host publicationProceedings
    Subtitle of host publicationInternational Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2013
    Pages926-937
    Publication statusPublished - 2013
    MoE publication typeNot Eligible
    EventInternational Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2013 - Sun Valley, ID, United States
    Duration: 5 May 20139 May 2013

    Conference

    ConferenceInternational Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M&C 2013
    Abbreviated titleM&C 2013
    CountryUnited States
    CitySun Valley, ID
    Period5/05/139/05/13

    Keywords

    • coupled calculation
    • material properties
    • Monte Carlo
    • multi-physics

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