TY - JOUR N2 - The paper deals with the wet steam flow in a steam turbine operating in a nuclear power plant. Using a pneumatic and an optical probe, the static pressure, steam velocity, steam wetness and the fine water droplets diameter spectra were measured before and beyond the last turbine low-pressure stage. The results of the experiment serve to understand better the wet steam flow and map its liquid phase in this area. The wet steam data is also used to modify the condensation model used in computational fluid dynamics simulations. The condensation model, i.e. the nucleation rate and the growth rate of the droplets, is adjusted so that results of the numerical simulations are in a good agreement with the experimental results. A 3D computational fluid dynamics simulations was performed for the lowpressure part of the turbine considering non-equilibrium steam condensation. In the post-processing of the of the numerical calculation result, the thermodynamic wetness loss was evaluated and analysed. Loss analysis was performed for the turbine outputs of 600, 800, and 1100 MW, respectively. L1 - http://journals.pan.pl/Content/121378/PDF-MASTER/art04_final.pdf L2 - http://journals.pan.pl/Content/121378 PY - 2021 IS - No 3 EP - 85 DO - 10.24425/ather.2021.138110 KW - Steam turbine KW - Wet steam loss KW - Non-equilibrium condensation KW - CFD A1 - Jun, Gukchol A1 - Kolovratník, Michal A1 - Hoznedl, Michal PB - The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences VL - vol. 42 DA - 2021.11.09 T1 - Wet steam flow in 1100 MW turbine SP - 63 UR - http://journals.pan.pl/dlibra/publication/edition/121378 T2 - Archives of Thermodynamics ER -