Interfacial wave patterns and their transition characteristics in gas-liquid two-phase flow through horizontal ducts

In this paper, an investigation on the interfacial wave patterns and their transition characteristics in gas-liquid two-phase flow through rectangular and circular horizontal conduits was carried out. The interfacial waves were traced and recorded by using conductance probes. With the experimental observation and the analysis, some kinds of different interfacial waves were distinguished and defined and then the interfacial wave patterns were given, which were compared with the former results of previous studies. The interfacial wave transition mechanism between each interfacial wave pattern was discussed and a set of transition equations were presented to predict the interfacial wave pattern transitions. The predictive results were compared with the experimental data, which showed good agreement.