A Semi-Empirical correlation for stratified two-phase flow friction
AbstractThe optimal design of two-phase flow pipes depends on various variables.
Pressure drop and liquid hold-up are essential parameters in the
appropriate design of pipes. These parameters can be estimated by
numerical simulation of pipes. However, the simulation strongly depends
on both phase frictions. Frictions are commonly calculated using
friction factors, and various empirical correlations have been proposed
to calculate friction factors, but most of these correlations are
dependent on the experimental conditions. The present study proposes a
semi-empirical friction factor model by modifying an existing model in
the literature for stratified two-phase flows. Experimental data from
various laboratories are taken to validate the interface shear stress,
velocity profile and pressure gradient. Compared with previous models,
the predicted velocity profiles and shear stresses are in better
agreement with the experimental data.