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


Liaqat A., Baytas A. C.

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, cilt.39, ss.2089-2102, 2001 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 39 Konu: 18
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1016/s0020-7225(01)00044-1
  • Dergi Adı: INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
  • Sayfa Sayıları: ss.2089-2102

Özet

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 presented. The effect of parameters which govern the radiative heat transfer from the pool surface has been investigated. The results show that for a certain set of parameters radiative heat transfer from the pool surface is more efficient than convection towards vessel circular wall. For all the cases considered in the present analysis well-stratified corium pool has been obtained. (C) 2001 Elsevier Science Ltd. All rights reserved.