Abstract

A model for stratified two-phase flow in pipes. pumps and other devices is presented. Using the assumption of a hydrostatic distribution of pressure over the cross section of a pipe. the effects of stratification are taken into account by means of specific terms in momentum and energy equations. These terms represent the pressure interactions between phases. Four concrete examples (classical earth gravity stratified flow. stratified flow in a regularly curved pipe. annular stratified flow caused by pre- or postrotation. and stratified flow in the impeller of a pump) and a comparison with an experiment are presented.

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