Two Phase Flow Pressure Drop in a Horizontal Pipe

The purpose of this study is to evaluate the correlations prediction for two phase flow pressure drops in a horizontal transparent pipe of (78 mm) nominal diameter by using air-water mixtures at a pressure close to atmospheric. The experimental data of friction pressure drop (pressure gradient) were presented as friction pressure drops in the form of two phase friction multipliers  2 fo where compared with the correlations of Lockhart and Martinelli, Chenoweth-Martin and homogeneous flow theory. The homogeneous model was the best.