Influence of the Tip Clearance on the Aeroelastic Characteristics of a Last Stage Steam Turbine
In this paper, the tip clearance effects on the aeroelastic stability of a last-stage steam turbine model are investigated.Most of the unsteady aerodynamic work contributing to flutter of the long blades of the last-stage of a steam turbine is done near the tip of the blade.The flow in this region is transonic and sensitive to geometric parameters