Interfacial transport correlations for subcooled water-steam bubbly flow in vertical conduits

In order to meet the required accurate prediction in two-fluid modelling, experiments were done to gather a data base for the development of interfacial transport models for subcooled water-steam flow in vertical conduits. Several areas investigated include area-averaged void fraction, interfacial area concentration, interfacial condensation heat transfer and bubble relative velocity. These areas were monitored and measurements were drawn out through the application of techniques exclusive for each. The obtained data was used to develop correlations for interfacial area concentration and interfacial heat transfer coefficient.