Transient conjugate heat transfer in a 2-D pool of molten core material of a light water reactor

Liaqat A., BAYTAŞ A. C.

European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000, Barcelona, İspanya, 11 - 14 Eylül 2000 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Barcelona
  • Basıldığı Ülke: İspanya
  • Anahtar Kelimeler: Conjugate heat transfer, Corium, Natural convection, Severe reactor accident, Volumetric heating
  • İstanbul Gelişim Üniversitesi Adresli: Evet

Özet

Natural convection flow induced by volumetric heating has been analysed in a 2- Dimensional cavity. The cavity is considered to be enclosed by thick walls at the sides and bottom, while a constant temperature has been assumed at the top. Laminar flow analysis has been carried out for a Ra number range of 106 to 1012. Properties of the molten core material (corium) and enclosing pressure vessel wall are taken from the open literature and are assumed to be constant for the present analysis. A benchmark solution for the conjugate problem compares very well with the results from the open literature. Isotherms, streamlines and wall Nusselt numbers are provided and are scrutinised. Results show a significant change in the buoyant flow parameters as compared to conventional nonconjugant investigations.