The Application of Advanced Aerodynamics to Steam Turbine Reaction Blading

Abstract

The higher efficiency in steam turbine has become an important requirement after the oil crisis with increased energy price. To meet this requirement an advanced aerodynamic technology has been incorporated in the design of reaction blading. Correlations of blading loss characteristics are built into a three dimensional flow field calculation computer program, and utilizing this program flow pattern optimization is achieved. A new reaction blading has been developed by applying this achieved. A new reaction blading has been developed by applying this advanced technology. Experimental verification for the new reaction blading in both cascade and turbine tests has brought about overall turbine performance improvements and the excellent corrsepondence of internal aerodynamic parameter to the predicted values.