Simulation of Phenomenon of Spontaneous Phase Change of Water Vapor With Suitable Nucleation and Droplet Growth Equations for Low Condensation Pressures

This paper discusses the application of the homogeneous nucleation equation and the droplet growth equation for prediction of condensation in steam nozzles. In some papers on the low condensation pressure (condensation pressure less than 0.5 bar) were showed which calculated droplet radius and pressure distribution had deviations from experimental results. In this study, for simulation of spontaneous condensation in low pressure, empirical function of classical theory of nucleation has been combined with droplet growth equation derived by Young. Finally, calculation results of pressure distribution and droplet radius has been compared with the experimental data. It is observed good agreement with experiments.