Flow Field and Loss Reduction Method of 3D Design Turbine Blade

Abstract

Recently, thermal power generation has been increasing to complement the power shortage due to the stoppage of nuclear power plants in Japan. The steam turbines are used for thermal power plants and the importance is increasing as the core component of the power generation. The turbine increase the temperature and pressure for the high efficiency. However, the aerodynamics performance of turbine cascade deteriorate by the increasing secondary flow loss due to the high loading. In this research, the loss generating mechanism in three-dimensional turbine cascade is revealed by automatic measuring system of cascade performance and CFD analysis, the secondary loss reduction is investigated analytically and experimentally.