Erosion and break-up of light-gas layers by a horizontal jet in a multi-vessel, large-scale containment test system

Robert Zboray, Guillaume Mignot, Ralf Kapulla, Domenico Paladino

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    The distribution and eventual stratification of hydrogen released during a hypothetical severe accident and the stability of the stratification formed in the early phase of the transient is of particular safety concern in Light Water Reactors (LWRs). The large-scale containment test facility PANDA (PSI, Switzerland) has been used to perform a series of four tests examining the erosion and break-up of stratified light-gas layers in the frame of the OECD SETH-2 project. The ultimate goal of the test program is to set-up an experimental data base of high-quality and high-density data that can challenge and validate 3D containment codes like e.g. GOTHIC, GASFLOW or MARS and validate the applicability of CFD codes like FLUENT or CFX for LWR containment problems. The test series discussed here focuses on the erosion of a stratified, helium-rich layer by horizontal steam injection at different locations below the layer. An approach with step-wise increasing complexity has been chosen to examine this problem allowing control over the rate of pressure increase and the occurrence of condensation. The step-wise approach enables a thorough understanding of the influence of different phenomena like position of steam injection, diffusion, pressurization and condensation on the behavior and erosion of the stratified layer.

    Original languageEnglish (US)
    Pages (from-to)10-18
    Number of pages9
    JournalNuclear Engineering and Design
    Volume291
    DOIs
    StatePublished - Jun 4 2015

    Fingerprint

    containment
    light water reactors
    erosion
    vessels
    Erosion
    vessel
    Light water reactors
    Gases
    Steam
    stratification
    steam
    steam injection
    Condensation
    condensation
    gases
    gas
    MARS (Manned Reusable Spacecraft)
    injection
    Helium
    Pressurization

    All Science Journal Classification (ASJC) codes

    • Nuclear and High Energy Physics
    • Nuclear Energy and Engineering
    • Materials Science(all)
    • Safety, Risk, Reliability and Quality
    • Waste Management and Disposal
    • Mechanical Engineering

    Cite this

    Zboray, Robert ; Mignot, Guillaume ; Kapulla, Ralf ; Paladino, Domenico. / Erosion and break-up of light-gas layers by a horizontal jet in a multi-vessel, large-scale containment test system. In: Nuclear Engineering and Design. 2015 ; Vol. 291. pp. 10-18.
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    abstract = "The distribution and eventual stratification of hydrogen released during a hypothetical severe accident and the stability of the stratification formed in the early phase of the transient is of particular safety concern in Light Water Reactors (LWRs). The large-scale containment test facility PANDA (PSI, Switzerland) has been used to perform a series of four tests examining the erosion and break-up of stratified light-gas layers in the frame of the OECD SETH-2 project. The ultimate goal of the test program is to set-up an experimental data base of high-quality and high-density data that can challenge and validate 3D containment codes like e.g. GOTHIC, GASFLOW or MARS and validate the applicability of CFD codes like FLUENT or CFX for LWR containment problems. The test series discussed here focuses on the erosion of a stratified, helium-rich layer by horizontal steam injection at different locations below the layer. An approach with step-wise increasing complexity has been chosen to examine this problem allowing control over the rate of pressure increase and the occurrence of condensation. The step-wise approach enables a thorough understanding of the influence of different phenomena like position of steam injection, diffusion, pressurization and condensation on the behavior and erosion of the stratified layer.",
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    Erosion and break-up of light-gas layers by a horizontal jet in a multi-vessel, large-scale containment test system. / Zboray, Robert; Mignot, Guillaume; Kapulla, Ralf; Paladino, Domenico.

    In: Nuclear Engineering and Design, Vol. 291, 04.06.2015, p. 10-18.

    Research output: Contribution to journalArticle

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