Validation of fluid-structure interaction simulation environment in analysis of large-break loss of coolant accident

Tellervo Brandt, Ville Lestinen, Timo Toppila, Jukka Kähkönen, Antti Timperi, Timo Pättikangas, Ismo Karppinen

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

    3 Citations (Scopus)

    Abstract

    In this article, we study a large-break loss of coolant accident (LBLOCA) where a guillotine break of one of the main coolant pipes occurs near the reactor pressure vessel (RPV). This initiates a pressure wave which propagates inside the RPV. The simulation of bidirectional fluid-structure interaction phenomena has been found to be important for accurate prediction of the resulting deformation and loads. In this article, fully coupled simulation results are validated against the German HDR (Heißdampfreaktor) experiments. The computational fluid dynamic (CFD) software Fluent and Star-CD are applied to modeling of three-dimensional, viscous, turbulent fluid flow. The MpCCI code is used for bidirectional coupling of the CFD simulation to the structural solver Abaqus. Pressure boundary condition at the pipe break is obtained in a two-phase simulation with the system code APROS. Comparisons are made for break mass flow, wall pressure, displacement and strain. The simulation results follow the experimental data fairly well. The sensitivity of the results to pressure boundary condition and water temperature is studied. In addition, the necessity of using bidirectional
    Original languageEnglish
    Title of host publicationProceedings
    Subtitle of host publication2008 Asia Simulation Conference - 7th International Conference on System Simulation and Scientific Computing, ASC-ICSC 2008
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages520-527
    ISBN (Print)978-1-4244-1786-5, 978-1-4244-1787-2
    DOIs
    Publication statusPublished - 2008
    MoE publication typeA4 Article in a conference publication
    Event2008 Asia Simulation Conference - 7th International Conference on System Simulation and Scientific Computing, ASC-ICSC 2008 - Beijing, China
    Duration: 10 Oct 200812 Oct 2008

    Conference

    Conference2008 Asia Simulation Conference - 7th International Conference on System Simulation and Scientific Computing, ASC-ICSC 2008
    Abbreviated titleASC-ICSC 2008
    CountryChina
    CityBeijing
    Period10/10/0812/10/08

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