Experiment on large scale plume interaction with a stratified gas environment resembling the thermal activity of a autocatalytic recombiner

Guillaume Mignot, Ralf Kapulla, Domenico Paladino, Robert Zboray

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    5 Scopus citations

    Abstract

    Computational Fluid Dynamics codes (CFD) are increasingly being used to simulate containment conditions after various transient accident scenarios. Consequently, the reliability of such codes must be tested against experimental data. Such validation experiments related to gas mixing and hydrogen transport within containment compartments addressing the effect of heat source are presented in this paper. The experiments were conducted in the large-scale thermal-hydraulics PANDA facility located at the Paul-Scherrer-Institute (PSI) in Switzerland, in the frame of the OECD/SETH-2 project. A 10 kW electric heater simulating the thermal activity of the autocatalytic recombiner was activated at full power in a containment vessel at the top of which a thick helium layer is initially present. The hot plume interacts with the bottom of the helium layer which is slowly eroded until complete break up at 1350 s. After final erosion of the layer a strong temperature and concentration gradient is maintained in the vessel below the heater inlet as well as in the adjacent vessel below the interconnecting pipe. A detailed characterization of the operating heater suggests the presence of cold gas ingress at the outlet that affects the flow in the chimney. This can be of concern if present in a real PAR unit.

    Original languageEnglish (US)
    Title of host publicationInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
    Pages1880-1889
    Number of pages10
    Publication statusPublished - Nov 19 2012
    EventInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012 - Chicago, IL, United States
    Duration: Jun 24 2012Jun 28 2012

    Publication series

    NameInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
    Volume3

    Other

    OtherInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
    CountryUnited States
    CityChicago, IL
    Period6/24/126/28/12

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    All Science Journal Classification (ASJC) codes

    • Energy Engineering and Power Technology
    • Nuclear Energy and Engineering

    Cite this

    Mignot, G., Kapulla, R., Paladino, D., & Zboray, R. (2012). Experiment on large scale plume interaction with a stratified gas environment resembling the thermal activity of a autocatalytic recombiner. In International Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012 (pp. 1880-1889). (International Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012; Vol. 3).