Interfacial Shear Stress of Stratified Flow in a HorizontalPipe

O6; Experimental data are presented for the void fraction and theshear stresses of stratified gas-liquid flow in a pipe. A new techniquewas used to measure the interface shear stress. The interfacial shearstress was determined by using two methods: a momentum balance of gasand an extrapolation of the Reynolds shear stress profile at the gas-liquidinterface. A new formula , relating to the interfacial friction factor withthe void fraction and superficial gas Reynold number, was developed to predict the interface shear stress . The predicted values are in good agreement withexperimental data.