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Aeroelastic Analysis of Blades Cascades Through Aerodynamic Reduced-Order Modeling

[+] Author Affiliations
Davide Finamore, Massimo Gennaretti

Roma Tre University, Rome, Italy

Fred Nitzsche

Carleton University, Ottawa, ON, Canada

Paper No. GT2011-45505, pp. 1253-1262; 10 pages
doi:10.1115/GT2011-45505
From:
  • ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition
  • Volume 6: Structures and Dynamics, Parts A and B
  • Vancouver, British Columbia, Canada, June 6–10, 2011
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5466-2
  • Copyright © 2011 by ASME

abstract

An aerodynamic Reduced-Order Model (ROM) is introduced to describe the aeroelastic behavior of a blade cascade of a turbomachine. This is obtained coupling an aerodynamic model with a semi-rigid 2D model for the description of the structure dynamics. The advantages of using an aerodynamic reduced-order model concern the high computational efficiency compared to the direct use of a CFD code, and the applicability of control laws to reduce, for instance, blades vibrations. ROMs are identified from both an analytical aerodynamic model and a numerical CFD solver. The aeroelastic stability of a blade cascade is examined with the presence or not of mistuning.

Copyright © 2011 by ASME
Topics: Modeling , Blades

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