CFD code application to wavy stratified gas-liquid flow

A computational fluid dynamics code was employed to obtain detailed charact eristics of horizontal wavy stratified two-phase flow for two geometries (p ipe and channel). By treating the gas and the liquid phases separately, the calculations are performed utilizing information concerning the pressure d rop and the liquid film thickness, which can either be obtained experimenta lly or calculated using one of the available correlations. The basic conver gence criterion is the continuity of the time-averaged interfacial velocity and shear stress between the two phases. A commercial CFD code (CFX(R)) wa s used for the calculation of the velocity profiles of both phases and the distribution of the shear stresses, i.e. liquid-to-all, interfacial. The ca lculated values are found to be in good agreement with those obtained exper imentally.