Cooling of molten core material within a pressurised water reactor vessel lower head: interaction of surface radiation and wall conduction with free convection

Citation
A. Liaqat et Ac. Baytas, Cooling of molten core material within a pressurised water reactor vessel lower head: interaction of surface radiation and wall conduction with free convection, INT J ENG S, 39(18), 2001, pp. 2089-2102
Citations number
12
Categorie Soggetti
Engineering Management /General
Journal title
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
ISSN journal
00207225 → ACNP
Volume
39
Issue
18
Year of publication
2001
Pages
2089 - 2102
Database
ISI
SICI code
0020-7225(200112)39:18<2089:COMCMW>2.0.ZU;2-6
Abstract
The phenomenon of cooling of molten core material inside the lower head of a pressurised water reactor pressure vessel has been analysed numerically. A detailed analysis of interaction of surface radiation and conjugate wall conduction with free convection inside the semi-circular cavity has been pr esented. The effect of parameters which govern the radiative heat transfer from the pool surface has been investigated. The results show that for a ce rtain set of parameters radiative heat transfer from the pool surface is mo re efficient than convection towards vessel circular wall. For all the case s considered in the present analysis well-stratified corium pool has been o btained. (C) 2001 Elsevier Science Ltd. All rights reserved.