![]() ![]() Milazzo A, Rocchetti A (2015) Modelling of ejector chillers with steam and other working fluids. Kafaei A, Salmani F, Lakzian E, Wróblewski W, Vlaskin MS, Deng Q (2022) The best angle of hot steam injection holes in the 3D steam turbine blade cascade. Īlekseev RA, Gribin VG, Tishchenko AA, Gavrilov IY, Tishchenko VA, Popov VV (2018) Application of PTV method for investigation of polydisperse wet steam flow. ĭykas S, Wróblewski W (2011) Single-and two-fluid models for steam condensing flow modeling. ĭing H, Tian Y, Wen C, Wang C, Sun C (2021) Polydispersed droplet spectrum and exergy analysis in wet steam flows using method of moments. Yazdani S, Lakzian E (2020) Numerical simulation and passive control of condensing flow through turbine blade by NVD Method Using Eulerian-Lagrangian Model. Specific turbulence dissipation (s −1) s:Įdathol J, Brezgin D, Aronson K, Kim HD (2020) Prediction of non-equilibrium homogeneous condensation in supersonic nozzle flows using Eulerian-Eulerian models. Indicate turbulent Prandtl numbers for k σ ω The designers and operators should be considered the roughness effects in the design and operation of wet steam ejectors due to the vital impact of the roughness on the liquid mass fraction, average droplet radius, droplet growth rate, ER, and COP. In addition, increment of the primary nozzle surface roughness decreases ER and COP of the refrigeration cycle by 3.67% and 3.8%, respectively. The result shows increasing roughness resulted in a shift of the shock chain to the primary nozzle, damping shock strength, and rising temperature in the diffuser. Six properties of wet steam are selected, including pressure, temperature, Mach number, average droplet radius, droplet growth rate, and liquid mass fraction. Moreover, different surface roughness has been successfully applied to the primary nozzle, and its effect on the entire flow is shown. ![]() The Eulerian-Eulerian model is validated by a comparison of numerical results with experimental data. The purpose of this work is to investigate the influences of the primary nozzle surface roughness on wet steam ejectors in the refrigeration cycle with steam water as a working flow. Machining operation and presence of water droplets cause increase the surface roughness of wet steam ejector walls and change its performance in the refrigeration cycle. ![]()
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