Some issues related to the modeling of interfacial areas in gas-liquid flows, II. Modeling the source terms for dispersed flows

The first part of this paper dealt with the conceptual issues encountered i n the definition of the interfacial area and in the derivation of a transpo rt equation. The second part has the following objectives: 1. to address th e closure issues for the source terms appearing in the transport equation w hen dealing with a bubbly flow in a vertical pipe; 2. to provide a list of open questions to be answered before introducing a transport equation for t he interfacial area concentration in a thermal-hydraulic computer code. (C) 2001 Academie des sciences/Editions scientifiques et medicales Elsevier SA S.