NDLI: Influence of the Blade Count Ratio on Aerodynamic Forcing: Part I

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Fruth, Florian Damian, M. Vogt Ma˚rtensson, Hans Mayorca, Mari´a A. Torsten, H. Fransson
Copyright Year	2010
Abstract	The influence of the Blade Count Ratio (BCR) on the aerodynamic forcing of a highly transonic compressor has been investigated. The focus has been put on the unsteady aerodynamics as well as mode excitability and thus High Cycle Fatigue (HCF) risk. A number of compressor stages were investigated that differed in blade count of the stator blade row. Time-resolved aerodynamic forcing results were acquired using a non-linear CFD approach. The results were decomposed into frequency content and combined with modal properties of the various components. It is found that the BCR is a key parameter to reduce generalized force and consequently vibratory HCF stresses. Furthermore a potential in avoiding and/or alleviating potential resonant crossings in the Campbell diagram is reported. The dependency of these aspects from BCR is largely non-linear and for the first time discussed in detail on the basis of a transonic compressor stage.
Sponsorship	International Gas Turbine Institute
Starting Page	1221
Ending Page	1233
Page Count	13
File Format	PDF
ISBN	9780791844014
DOI	10.1115/GT2010-22756
e-ISBN	9780791838723
Volume Number	Volume 6: Structures and Dynamics, Parts A and B
Conference Proceedings	ASME Turbo Expo 2010: Power for Land, Sea, and Air
Language	English
Publisher Date	2010-06-14
Publisher Place	Glasgow, UK
Access Restriction	Subscribed
Subject Keyword	Blades Computational fluid dynamics High cycle fatigue Stators Aerodynamics Risk Compressors Resonance Stress
Content Type	Text
Resource Type	Article

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