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

Krepper, Eckhard, Cartland-Glover, Gregory, Grahn, Alexander, Weiss, Frank-Peter, Alt, Sören, Hampel, Rainer, Kästner, Wolfgang and Seeliger, Andrè (2008). CFD-modeling and Experiments of insulation debris transport phenomena in water flow. IN: Computational Fluid Dynamics (CFD) in Nuclear Reactor Safety (NRS). Grenoble (FR): Nuclear Energy Agency.

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.

Divisions: Engineering & Applied Sciences > Systems analytics research institute (SARI)
Engineering & Applied Sciences > Mathematics
Additional Information: © 2008 The Authors
Event Title: OECD/NEA & International Atomic Energy Agency (IAEA) Workshop CES Grenoble, France, 10-12 Sept. 2008
Event Type: Other
Event Dates: 2008-09-10 - 2008-09-12
Full Text Link: http://www.oecd ... ns/ac/AC-01.pdf
Related URLs:
Published Date: 2008-09-10
Authors: Krepper, Eckhard
Cartland-Glover, Gregory ( 0000-0002-2647-2757)
Grahn, Alexander
Weiss, Frank-Peter
Alt, Sören
Hampel, Rainer
Kästner, Wolfgang
Seeliger, Andrè

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