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/Report/Conference proceedingConference publication

Abstract

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 Sep 2008
EventOECD/NEA & International Atomic Energy Agency (IAEA) Workshop CES Grenoble, France, 10-12 Sept. 2008 - Grenoble, France
Duration: 10 Sep 200812 Sep 2008

Conference

ConferenceOECD/NEA & International Atomic Energy Agency (IAEA) Workshop CES Grenoble, France, 10-12 Sept. 2008
CountryFrance
CityGrenoble
Period10/09/0812/09/08

Bibliographical note

© 2008 The Authors

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