Prediction of holdup, axial pressure gradient and wall shear stress in wavy stratified and stratified/atomization gas/liquid flow

A computational approach is proposed to predict liquid holdup, frictional pressure loss and liquid-wall shear stress, averaged over the fraction of the pipe circumference covered by the continuous liquid phase. The method applies to steady, fully-developed wavy stratified and stratified/atomization gas/liquid flow in horizontal pipes. The performance of the model is satisfactory and fair predictions are obtained for all data sets employed to assess its accuracy.