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An Entropy Loss Approach for a Meanline Bladerow Model With Coupling to Test Data and 3D CFD Results

[+] Author Affiliations
John A. Reed

University of Toledo, Toledo, OH

Mark G. Turner

University of Cincinnati, Cincinnati, OH

Paper No. GT2005-68608, pp. 1127-1136; 10 pages
  • ASME Turbo Expo 2005: Power for Land, Sea, and Air
  • Volume 6: Turbo Expo 2005, Parts A and B
  • Reno, Nevada, USA, June 6–9, 2005
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4730-6 | eISBN: 0-7918-3754-8
  • Copyright © 2005 by ASME


A methodology which couples a computational fluid dynamics simulation and a ID meanline bladerow model employing entropy-based loss terms is presented. A 3D APNASA CFD flow solution of the GE90-94B was used to provide input to the 1D bladerow model, which computed entropy-generation terms from the flow state. These terms accounted for losses in mixing of leakage and cooling flow, and gross aerodynamics using bladerow entropy loss coefficients as defined by Denton. A description of the 1D model is presented. The 1D bladerow model was implemented in the NPSS system making it possible to easily construct N-stage component simulations. The 1D model was used to generate partial performance maps of the HPT and LPT for use in a coupled 0D-3D simulation of the full GE90 engine. To validate the approach, a data match of the GE EEE HPT at the design point has been made and presented. An extrapolation of the model to off-design points has compared favorably to the experimental data.

Copyright © 2005 by ASME



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