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Abstract

Most postulated accidents in Light Water Reactors are governed by two-phase flow processes and related evaporation/condensation heat transfer, the modelling of which still presents a major theoretical challenge. A new description is presented for interfacial transport based on an explicit modelling of the interfacial area concentration and its evolution in time and space. A transport equation for the particle number density is derived and the corresponding source terms for interfacial area generation or destruction are formulated. The evolution of the interfacial area concentration is thus described as a dynamic, time dependent process and as such provides the basis for an improved description of interfacial transport processes.

Additional information

Authors: STÄDTKE H, JRC Ispra (IT);WORTH B, JRC Ispra (IT);BLAHAK A, Forschungszentrum Karlsruhe GmbH (DE)
Bibliographic Reference: Paper presented: NURETH-8 Conference, Kyoto (JP), September 30-October 4, 1997
Availability: Available from (1) as Paper EN 40775 ORA
Record Number: 199810043 / Last updated on: 1998-02-03
Category: PUBLICATION
Original language: en
Available languages: en