C207 APPLICATIONS OF HIGHER-ORDER ACCURATE COMPUTATIONAL FLUID DYNAMIC METHOD TO STEAM TURBINE BLADE DESIGNS

概要

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A study of software development for steam turbine blade flow analysis was carried out as a cooperative project between a University and a steam turbine manufacture for the purpose of developing steam turbine aerodynamic technologies and enhancing efficiencies of subsonic and transonic turbine blades. A higher-order accurate robust computational fluid dynamic method, which includes an implicit LU-SGS-GE scheme and a higher-order, high resolution MUSCL TVD scheme, was developed. In this paper, we will report important applications of the steam turbine blade analysis, which include three cases of typical steam turbine blades. In contrast, a hybrid three-dimensional blade design method, coupled with optimization algorithms and viscous flow analysis, was developed in Tsinghua University. This can obviously reduce the level of aerodynamic loss of turbine blades. The comparisons between the numerical results and experimental data show the present study is able to become an efficient and robust tool to achieve high efficiency blade design.-
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