Numerical and experimental investigations for insulation particle transport phenomena in water flow

E. Krepper, G. M. Cartland Glover, A. Grahn, S. Alt, W. Kästner, A. Kratzsch, A. Seeliger

    Research output: Contribution to journalArticlepeer-review


    The investigation of insulation debris generation, transport and sedimentation becomes more important with regard to reactor safety research for pressurized and boiling water reactors, when considering the long-term behaviour of emergency core coolant 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 a 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 or impinge on the emergency core cooling systems.
    Open questions of generic interest are for example the particle load on strainers and corresponding pressure-drop, the sedimentation of the insulation debris in a water pool, its possible re-suspension and transport in the sump water flow. A joint research project on such questions is being performed in cooperation with the University of Applied Science Zittau/Görlitz and the Forschungszentrum Dresden-Rossendorf. The project deals with the experimental investigation and the development of computational fluid dynamic (CFD) models for the description of particle transport phenomena in coolant flow. While the experiments are performed at the University Zittau/Görlitz, the theoretical work is concentrated at Forschungszentrum Dresden-Rossendorf.
    In the present paper, the basic concepts for computational fluid dynamic (CFD) modelling are described and experimental results are presented. Further experiments are designed and feasibility studies were performed.
    Original languageEnglish
    Pages (from-to)1564-1579
    Number of pages16
    JournalAnnals of Nuclear Energy
    Issue number8
    Early online date4 Mar 2008
    Publication statusPublished - Aug 2008

    Bibliographical note

    NOTICE: this is the author’s version of a work that was accepted for publication in Annals of nuclear energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Krepper, E, Cartland Glover, GM, Grahn, A, Alt, S, Kästner, W, Kratzsch, A & Seeliger, A, 'Numerical and experimental investigations for insulation particle transport phenomena in water flow', Annals of nuclear energy, vol 35, no. 8 (2008) DOI


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