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Cell Dancoff-Based Embedded Self-Shielding Capability for Doubly Heterogeneous Particulate Fuels in SCALE/Polaris

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

    Abstract

    Polaris is a two-dimensional (2D) transport lattice physics capability in the SCALE code system for light-water reactor (LWR) analysis. SCALE/Polaris is being extended to treat doubly heterogeneous particulate fuels in LWRs with accident-tolerant fuels and prismatic high-temperature gas-cooled reactor (HTGR) fuel. Recently, a Dancoff-based Wigner-Seitz approximation capability based on the embedded self-shielding method (DWA-ESSM) was implemented into Polaris for efficient computation. A new double heterogeneity treatment capability based on DWA-ESSM in conjunction with the Hebert's collision probability method for double heterogeneity was developed and implemented for Polaris. The new capability was verified by performing benchmark calculations for the prismatic HTGR fuel compact problems with various design parameters through a code-to-code comparison between the Polaris and continuous-energy Monte Carlo results.

    Original languageEnglish
    Title of host publicationProceedings of the International Conference on Physics of Reactors, PHYSOR 2022
    PublisherAmerican Nuclear Society
    Pages2082-2091
    Number of pages10
    ISBN (Electronic)9780894487873
    DOIs
    StatePublished - 2022
    Event2022 International Conference on Physics of Reactors, PHYSOR 2022 - Pittsburgh, United States
    Duration: May 15 2022May 20 2022

    Publication series

    NameProceedings of the International Conference on Physics of Reactors, PHYSOR 2022

    Conference

    Conference2022 International Conference on Physics of Reactors, PHYSOR 2022
    Country/TerritoryUnited States
    CityPittsburgh
    Period05/15/2205/20/22

    Funding

    This study was supported by US Nuclear Regulatory Commission.  Notice: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

    Keywords

    • Dancoff-based Wigner-Seitz approximation
    • Double Heterogeneity
    • ESSM
    • Polaris

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