Calculating Model for Two-Phase Flow Section of Once Through Helical-Coiled Steam Generator

A two-phase section calculating model for once-through helical-coiled steam generator was developed. Nonequiliburium four-equation drift-flux model was adopted and the two-phase flow section of once-through helical-coiled steam generator was divided into more subsections. Suitable structure property equations and heat transfer equations were adopted, and steady state analysis for once-through helical-coiled steam generator was carried out by numerical method.