The purpose of this study is to simulate unsteady steam flows through three-stage stator and rotor blade passages in a middle-pressure steam turbine operated in a power Key Fob Kit plant while considering manufactured and secular-changed blade shapes.The shapes of the manufactured and secular-changed blades are measured during overhaul.The numerical method is based on an in-house code developed by Tohoku University.
The time-dependent pressure and the Mach number are visualized, and the difference of the results obtained by Best Extractor Lift BE-LI-90-GL Designer Downdraft Cooker Hood 90cm assuming manufactured and secular-changed blades is explained.The simulated static temperatures assuming the blades shapes are then compared with each other and with the measured data.In addition, a simple method modifying the simulated static temperature considering real gas effect is introduced.