LAGRANGIAN COORDINATES FOR A DRIFT-FLUX MODEL OF A GAS-LIQUID MIXTURE

The mass Lagrangian coordinate associated with the velocity field of t he gas for a nonstationary drift-flux model of a gas-liquid mixture is introduced here. If the mass transfer is neglected, this results in a quite simple structure of the governing equations and permits to inte grate one of the equations independently on the others. The simplified model, describing the horizontal two-phase flow for high Froude numbe r is considered and some explicit solutions to this model in the mass Lagrangian coordinates are obtained. Copyright (C) 1996 Elsevier Scien ce Ltd.