FINIX - Fuel behavior model and interface for multiphysics applications: Code documentation for version 1.18.9

    Research output: Book/ReportReport

    Abstract

    The FINIX fuel behavior code has been updated to version 1.18.9. The new version has been validated, for which a separate report has been published. Several small corrections have been made and a new automatic timestepping algorithm implemented for steady-state scenarios.

    The FINIX code has been designed to provide a fuel behavior module for other calculation codes in multiphysics simulations. The intended use is the improvement of fuel behavior description in neutronics, thermal hydraulics and reactor dynamics codes, without having to employ full-scale fuel performance codes. FINIX couples with the host code on a source code level, and provides an interface of functions that can be used to access the fuel behavior model from the host code. At VTT, FINIX has been integrated into the Monte Carlo reactor physics code Serpent 2, and reactor dynamics codes TRAB-1D, TRAB3D and HEXTRAN.

    FINIX consists of several interconnected models that describe the thermo-mechanical behavior of the fuel rod. FINIX solves the transient or steady-state heat equation, with couplings to the cladding and pellet mechanical behavior through the gap conductance and pressure. Publicly available experimental correlations are used for the material properties, and simple models for the heat transfer from the cladding to the coolant have been included.

    FINIX has been verified against the FRAPTRAN and FRAPCON fuel performance codes in RIA and steady-state scenarios, and compared against experimental Halden reactor data. Results indicate good agreement with the FRAPTRAN and FRAPCON codes and experimental measurements. Limitations of the present version in the simulated scenarios have also been identified.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages84
    Publication statusPublished - 2018
    MoE publication typeNot Eligible

    Publication series

    SeriesSSM Rapport
    NumberVTT-R-06824-18

    Fingerprint

    Experimental reactors
    Coolants
    Materials properties
    Physics
    Hydraulics
    Heat transfer
    Hot Temperature

    Cite this

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    title = "FINIX - Fuel behavior model and interface for multiphysics applications: Code documentation for version 1.18.9",
    abstract = "The FINIX fuel behavior code has been updated to version 1.18.9. The new version has been validated, for which a separate report has been published. Several small corrections have been made and a new automatic timestepping algorithm implemented for steady-state scenarios. The FINIX code has been designed to provide a fuel behavior module for other calculation codes in multiphysics simulations. The intended use is the improvement of fuel behavior description in neutronics, thermal hydraulics and reactor dynamics codes, without having to employ full-scale fuel performance codes. FINIX couples with the host code on a source code level, and provides an interface of functions that can be used to access the fuel behavior model from the host code. At VTT, FINIX has been integrated into the Monte Carlo reactor physics code Serpent 2, and reactor dynamics codes TRAB-1D, TRAB3D and HEXTRAN. FINIX consists of several interconnected models that describe the thermo-mechanical behavior of the fuel rod. FINIX solves the transient or steady-state heat equation, with couplings to the cladding and pellet mechanical behavior through the gap conductance and pressure. Publicly available experimental correlations are used for the material properties, and simple models for the heat transfer from the cladding to the coolant have been included. FINIX has been verified against the FRAPTRAN and FRAPCON fuel performance codes in RIA and steady-state scenarios, and compared against experimental Halden reactor data. Results indicate good agreement with the FRAPTRAN and FRAPCON codes and experimental measurements. Limitations of the present version in the simulated scenarios have also been identified.",
    author = "Henri Loukusa and Jussi Peltonen and Ville Valtavirta",
    year = "2018",
    language = "English",
    series = "SSM Rapport",
    number = "VTT-R-06824-18",
    publisher = "VTT Technical Research Centre of Finland",
    address = "Finland",

    }

    FINIX - Fuel behavior model and interface for multiphysics applications : Code documentation for version 1.18.9. / Loukusa, Henri; Peltonen, Jussi; Valtavirta, Ville.

    Espoo : VTT Technical Research Centre of Finland, 2018. 84 p. (SSM Rapport; No. VTT-R-06824-18).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - FINIX - Fuel behavior model and interface for multiphysics applications

    T2 - Code documentation for version 1.18.9

    AU - Loukusa, Henri

    AU - Peltonen, Jussi

    AU - Valtavirta, Ville

    PY - 2018

    Y1 - 2018

    N2 - The FINIX fuel behavior code has been updated to version 1.18.9. The new version has been validated, for which a separate report has been published. Several small corrections have been made and a new automatic timestepping algorithm implemented for steady-state scenarios. The FINIX code has been designed to provide a fuel behavior module for other calculation codes in multiphysics simulations. The intended use is the improvement of fuel behavior description in neutronics, thermal hydraulics and reactor dynamics codes, without having to employ full-scale fuel performance codes. FINIX couples with the host code on a source code level, and provides an interface of functions that can be used to access the fuel behavior model from the host code. At VTT, FINIX has been integrated into the Monte Carlo reactor physics code Serpent 2, and reactor dynamics codes TRAB-1D, TRAB3D and HEXTRAN. FINIX consists of several interconnected models that describe the thermo-mechanical behavior of the fuel rod. FINIX solves the transient or steady-state heat equation, with couplings to the cladding and pellet mechanical behavior through the gap conductance and pressure. Publicly available experimental correlations are used for the material properties, and simple models for the heat transfer from the cladding to the coolant have been included. FINIX has been verified against the FRAPTRAN and FRAPCON fuel performance codes in RIA and steady-state scenarios, and compared against experimental Halden reactor data. Results indicate good agreement with the FRAPTRAN and FRAPCON codes and experimental measurements. Limitations of the present version in the simulated scenarios have also been identified.

    AB - The FINIX fuel behavior code has been updated to version 1.18.9. The new version has been validated, for which a separate report has been published. Several small corrections have been made and a new automatic timestepping algorithm implemented for steady-state scenarios. The FINIX code has been designed to provide a fuel behavior module for other calculation codes in multiphysics simulations. The intended use is the improvement of fuel behavior description in neutronics, thermal hydraulics and reactor dynamics codes, without having to employ full-scale fuel performance codes. FINIX couples with the host code on a source code level, and provides an interface of functions that can be used to access the fuel behavior model from the host code. At VTT, FINIX has been integrated into the Monte Carlo reactor physics code Serpent 2, and reactor dynamics codes TRAB-1D, TRAB3D and HEXTRAN. FINIX consists of several interconnected models that describe the thermo-mechanical behavior of the fuel rod. FINIX solves the transient or steady-state heat equation, with couplings to the cladding and pellet mechanical behavior through the gap conductance and pressure. Publicly available experimental correlations are used for the material properties, and simple models for the heat transfer from the cladding to the coolant have been included. FINIX has been verified against the FRAPTRAN and FRAPCON fuel performance codes in RIA and steady-state scenarios, and compared against experimental Halden reactor data. Results indicate good agreement with the FRAPTRAN and FRAPCON codes and experimental measurements. Limitations of the present version in the simulated scenarios have also been identified.

    M3 - Report

    T3 - SSM Rapport

    BT - FINIX - Fuel behavior model and interface for multiphysics applications

    PB - VTT Technical Research Centre of Finland

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    ER -

    Loukusa H, Peltonen J, Valtavirta V. FINIX - Fuel behavior model and interface for multiphysics applications: Code documentation for version 1.18.9. Espoo: VTT Technical Research Centre of Finland, 2018. 84 p. (SSM Rapport; No. VTT-R-06824-18).