In this study

interface shapes of horizontal oil-water two-phase flow are predicted by using Young-Laplace equation model and minimum energy model. Meanwhile

the interface shapes of horizontal oil-water twophase flow in a 20 mm inner diameter pipe are measured by a novel conductance parallel-wire array probe (CPAP). It is found that

for flow conditions with low water holdup

there is a large deviation between the model-predicted interface shape and the experimentally measured one. Since the variation of pipe wetting characteristics in the process of fluid flow can lead to the changes of the contact angle between the fluid and the pipe wall

the models mentioned above are modified by considering dynamic contact angle. The results indicate that the interface shapes predicted by the modified models present a good consistence with the ones measured by CPAP.