Acoustic emission(AE) as a technology of non-destructive detection for measuring the gas-liquid two-phase flow is superior to traditional method in non-invasiveness,no destruction of test pipe and flow field distribution,strong signal,and high sensitivity.The experiment was operated on a multiphase flow experimental device in Hebei University.Experiments based on the data processing method collected the features of gas-liquid two-phase flow in vertical pipe.The acoustic emission technology could reflect the...