A two-dimensional model to predict flow behavior for stratified smooth and stratified wavy two-phase flow is presented. The velocity profiles in both the liquid and the gas are assumed to be described by a sum of two logarithmic velocity profiles, and the interface is treated as a moving wall. From the requirement that the velocity profiles near the wall and the interface approach the classic logarithmic profiles, a closed equation system is obtained, and by solving these equations the total flow is described. The principle behavior of the liquid hold-up as a function of the governing flow parameters is examined for a plane duct. Approximations for circular pipes are also presented. The calculated results are compared with experimental data, and the agreement for stratified smooth flow is very good.

This content is only available via PDF.
You do not currently have access to this content.