Sixth International Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP6
EFFECT OF ROTOR BLADE SCALING ON GAS TURBINE PERFORMANCE
pages 803-808
DOI: 10.1615/TSFP6.1290
ABSTRAKT
The present work is a study of the effects of rotor blade scaling of a single-stage high pressure turbine on the time-averaged turbine performance and on parameters that influence vibratory stresses on the rotor blades. Three configurations have been considered: a reference case with 36 rotor blades and 24 stator vanes, a case with blades upscaled by 12.5%, and a case with blades downscaled by 10%. The present results demonstrate that blade scaling effects were essentially negligible on the time-averaged turbine performance, but measurable on the unsteady surface pressure fluctuations, maximum levels of which occurred near the leading edges and towards the roots of the blades.