0402 nuerical simulation of unsteady 3-d flows through multi-stage stator-rotor stacked blades

In turbomacinery, secondary flows such as horseshoe vortex and leakage vortex induce the aerodynamic loss. Stacking is applied to turbine blades for reducing the secondary flows. The purpose of this paper is to conduct numerical simulations of flow fields around the rotor and stator blade rows in a multi-stage low pressure steam turbine. Flows through stacked blade rows are calculated and compared to those of the original blade rows.