Modeling missing pellet surface defects with BISON

    Research output: Book/ReportReport

    Abstract

    In this report, the BISON fuel performance code developed at Idaho National Laboratory was used to model a missing pellet surface. Such an analysis requires modifications to automatically generated meshes to model a missing pellet surface type defect. A method to modify these automatically generated meshes was devised in this work, and it can be used in the future to generate more intricate pellet geometries.

    A two-dimensional model for the missing pellet surface was used in this work, even though it does not capture all phenomena occurring at the location of the missing pellet surface defect. Stresses in the cladding and pellet were investigated at the defect location, and as expected the von Mises stress at the cladding inner surface was higher in the missing pellet surface case. At the location of highest stress in the missing pellet surface case, the von Mises stress was over 100 MPa higher than in the fuel rod without a defect.
    Original languageEnglish
    PublisherVTT Technical Research Centre of Finland
    Number of pages27
    Publication statusPublished - 2019
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesVTT Research Report
    NumberVTT-R-00067-19

    Fingerprint

    Surface defects
    Defects
    Geometry

    Cite this

    Loukusa, H. (2019). Modeling missing pellet surface defects with BISON. VTT Technical Research Centre of Finland. VTT Research Report, No. VTT-R-00067-19
    Loukusa, Henri. / Modeling missing pellet surface defects with BISON. VTT Technical Research Centre of Finland, 2019. 27 p. (VTT Research Report; No. VTT-R-00067-19).
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    abstract = "In this report, the BISON fuel performance code developed at Idaho National Laboratory was used to model a missing pellet surface. Such an analysis requires modifications to automatically generated meshes to model a missing pellet surface type defect. A method to modify these automatically generated meshes was devised in this work, and it can be used in the future to generate more intricate pellet geometries.A two-dimensional model for the missing pellet surface was used in this work, even though it does not capture all phenomena occurring at the location of the missing pellet surface defect. Stresses in the cladding and pellet were investigated at the defect location, and as expected the von Mises stress at the cladding inner surface was higher in the missing pellet surface case. At the location of highest stress in the missing pellet surface case, the von Mises stress was over 100 MPa higher than in the fuel rod without a defect.",
    author = "Henri Loukusa",
    year = "2019",
    language = "English",
    series = "VTT Research Report",
    publisher = "VTT Technical Research Centre of Finland",
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    Loukusa, H 2019, Modeling missing pellet surface defects with BISON. VTT Research Report, no. VTT-R-00067-19, VTT Technical Research Centre of Finland.

    Modeling missing pellet surface defects with BISON. / Loukusa, Henri.

    VTT Technical Research Centre of Finland, 2019. 27 p. (VTT Research Report; No. VTT-R-00067-19).

    Research output: Book/ReportReport

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    AU - Loukusa, Henri

    PY - 2019

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    N2 - In this report, the BISON fuel performance code developed at Idaho National Laboratory was used to model a missing pellet surface. Such an analysis requires modifications to automatically generated meshes to model a missing pellet surface type defect. A method to modify these automatically generated meshes was devised in this work, and it can be used in the future to generate more intricate pellet geometries.A two-dimensional model for the missing pellet surface was used in this work, even though it does not capture all phenomena occurring at the location of the missing pellet surface defect. Stresses in the cladding and pellet were investigated at the defect location, and as expected the von Mises stress at the cladding inner surface was higher in the missing pellet surface case. At the location of highest stress in the missing pellet surface case, the von Mises stress was over 100 MPa higher than in the fuel rod without a defect.

    AB - In this report, the BISON fuel performance code developed at Idaho National Laboratory was used to model a missing pellet surface. Such an analysis requires modifications to automatically generated meshes to model a missing pellet surface type defect. A method to modify these automatically generated meshes was devised in this work, and it can be used in the future to generate more intricate pellet geometries.A two-dimensional model for the missing pellet surface was used in this work, even though it does not capture all phenomena occurring at the location of the missing pellet surface defect. Stresses in the cladding and pellet were investigated at the defect location, and as expected the von Mises stress at the cladding inner surface was higher in the missing pellet surface case. At the location of highest stress in the missing pellet surface case, the von Mises stress was over 100 MPa higher than in the fuel rod without a defect.

    M3 - Report

    T3 - VTT Research Report

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    Loukusa H. Modeling missing pellet surface defects with BISON. VTT Technical Research Centre of Finland, 2019. 27 p. (VTT Research Report; No. VTT-R-00067-19).