Verification and Validation of Numerical Models of the Transport of Insulation Debris
NURETH-14 - 2011 September 25-30


Presented at:
NURETH-14
2011 September 25-30
Location:
Toronto, Canada
Session Title:
B2-1 Computational Multi-Fluid Dynamics and Validation/Verification/Applications

Authors:
Gregory M. Cartland Glover (Helmholtz-Zentrum Dresden-Rossendorf)
Alexander Kratzsch (Hochschule Zittau/Goerlitz)
Eckhard Krepper (Helmholtz-Zentrum Dresden-Rossendorf)
Stefan Renger (Hochschule Zittau/Goerlitz)
André Seeliger (Hochschule Zittau/Goerlitz)
Frank Zacharias (Hochschule Zittau/Goerlitz)
Sören Alt ((University of Applied Sciences Zittau//Goerlitz))
Wolfgang Kästner (Hochschule Zittau/Goerlitz)
Holger Kryk (Helmholtz-Zentrum Dresden-Rossendorf)
Frank-Peter Weiss (Helmholtz-Ze   

Abstract

Mineral wool fibre agglomerates (MWFA), which are released by damage to insulation

materials located near to a primary circuit coolant leak, maybe transported to the containment

sump strainers, where they can accumulate and compromise the long-term operation of the

emergency core cooling system. Numerical models of the transport of MWFA are validated

against single effect tests of sedimentation in a quiescent rectangular column and

sedimentation in a horizontal flow. MWFA can be modelled as a number of pseudocontinuous

dispersed phases of spherical wetted agglomerates. Agglomerate size, density,

relative viscosity of the fluid-fibre mixture and the turbulent dispersion influence MWFA

transport.

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