Reduction of Thermodynamic Losses in a Supersonic Nucleating Steam Nozzle by Spraying Water Droplets.

During the course of expansion of steam in turbines, the vapour first supercools and then nucleates to become a two-phase mixture. formation of the liquid phase causes thermodynamic andaerodynamic losses in steam turbines. in this study, the treatment is a one-dimensional, non-equilibrium flow in a steady laval nozzle. in this paper, the changes in the rate of nucleation, entropy, pressure andother parameters of the two-phase flow, subjected to spraying the liquid droplets close to the nozzle's throat, are investigated. by injecting the water droplets into a supersonic condensing flow, the thermodynamicloss is considerably decreased.