Simulation of unsteady flows through three-stage middle pressure steam turbine in operation

Simulation of unsteady flows through three-stage middle pressure steam turbine in operation

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The purpose of this study is to simulate unsteady steam flows welding sweater through three-stage stator and rotor blade passages in a middle-pressure steam turbine operated in a power 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 assuming manufactured and secular-changed blades is explained.

The simulated merlot redbud tree for sale 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.