CFD-modeling and Experiments of insulation debris transport phenomena in water flow

Eckhard Krepper, Gregory Cartland-Glover, Alexander Grahn, Frank-Peter Weiss, Sören Alt, Rainer Hampel, Wolfgang Kästner, Andrè Seeliger

    Research output: Chapter in Book/Published conference outputConference publication


    The investigation of insulation debris generation, transport and sedimentation becomes important with regard to reactor safety research for PWR and BWR, when considering the long-term behavior of emergency core cooling systems during all types of loss of coolant accidents (LOCA). The insulation debris released near the break during a LOCA incident consists of a mixture of disparate particle population that varies with size, shape, consistency and other properties. Some fractions of the released insulation debris can be transported into the reactor sump, where it may perturb/impinge on the emergency core cooling systems. Open questions of generic interest are the sedimentation of the insulation debris in a water pool, its possible re-suspension and transport in the sump water flow and the particle load on strainers and corresponding pressure drop. A joint research project on such questions is being performed in
    cooperation between the University of Applied Sciences Zittau/Görlitz and the Forschungszentrum Dresden-Rossendorf. The project deals with the experimental investigation of particle transport phenomena in coolant flow and the development of CFD models for its description. While the experiments are performed at the University at Zittau/Görlitz, the theoretical modeling efforts are
    concentrated at Forschungszentrum Dresden-Rossendorf. In the current paper the basic concepts for CFD modeling are described and feasibility studies
    including the conceptual design of the experiments are presented.
    Original languageEnglish
    Title of host publicationComputational Fluid Dynamics (CFD) in Nuclear Reactor Safety (NRS)
    Subtitle of host publicationProceedings of the workshop on Experiments and CFD Code Application to Nuclear Reactor Safety (XCFD4NRS) Grenoble, France, 10-12 September 2008
    Place of PublicationGrenoble (FR)
    PublisherNuclear Energy Agency
    Publication statusPublished - 10 Sept 2008
    EventOECD/NEA & International Atomic Energy Agency (IAEA) Workshop CES Grenoble, France, 10-12 Sept. 2008 - Grenoble, France
    Duration: 10 Sept 200812 Sept 2008


    ConferenceOECD/NEA & International Atomic Energy Agency (IAEA) Workshop CES Grenoble, France, 10-12 Sept. 2008

    Bibliographical note

    © 2008 The Authors


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