Air Water two phase vertical upward flow regime identification with cross sectional phase distribution

To study two phase flow is so crucial. Since many engineering fields such as the nuclear power plant are related to its safety. In order to understand phenomena of the two phase flow, identification of two phase flow regime and characteristics have to be understood. Flow regime affects the mass transfer such as heat transfer or evaporation/condensation. Therefore it is very useful to predict the flow regimes if flow condition is given. Traditionally, flow regime identification is classified through result of its experiments. Lots of flow regime maps are designed with dimensional coordinate based on superficial velocities. In this study verify the vertical upward flow regime based on theoretical models