A heat transfer correlation for turbulent gas-liquid two-phase flow of several fluid combinations and different flow patterns in vertical pipes

In this study, a general two-phase non-boiling heat transfer correlation for turbulent flow (Re{sub SL} {gt} 4,000) in vertical tubes with different fluid flow patterns and fluid combinations was developed using experimental data available from the literature. A total of 255 data points from three available studies (which included the four sets of data) were used to determine the curve-fitted constants in the new improved general correlation. The performance of the general correlation was compared against two-phase correlations from the literature, which were developed for specific fluid combinations. This study is applicable to the flow natural gas and oil in flowlines and boreholes.