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., BAYTAŞ A. C.

International Journal of Engineering Science, cilt.39, sa.18, ss.2089-2102, 2001 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 39 Sayı: 18
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1016/s0020-7225(01)00044-1
  • Dergi Adı: International Journal of Engineering Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2089-2102
  • Anahtar Kelimeler: Conjugate free convection, Core debris, Heat removal, Radiation heat transfer, Severe reactor accident, SIMPLER
  • İstanbul Gelişim Üniversitesi Adresli: Evet

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. © 2001 Elsevier Science Ltd. All rights reserved.