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A Review of Inlet-Fan Coupling Methodologies

[+] Author Affiliations
Benjamin Godard, Edouard De Jaeghere

Safran Aircraft Engines, Moissy-Cramayel, France

Nabil Ben Nasr, Julien Marty, Raphael Barrier

ONERA, Meudon, France

Nicolas Gourdain

Université de Toulouse, Toulouse, France

Paper No. GT2017-63577, pp. V02BT41A018; 11 pages
doi:10.1115/GT2017-63577
From:
  • ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
  • Volume 2B: Turbomachinery
  • Charlotte, North Carolina, USA, June 26–30, 2017
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5079-4
  • Copyright © 2017 by ASME

abstract

With the rise of ultra high bypass ratio turbofan and shorter and slimmer inlet geometries compared to classical architectures, designers face new challenges as nacelle and fan design cannot anymore be addressed independently. This paper reviews CFD methods developed to simulate inlet-fan interactions and suitable for industrial design cycles. In addition to the reference isolated fan and nacelle models, the methodologies evaluated in this study consist of two fan modeling approaches, an actuator disc and body-force source terms.

The configuration is a modern turbofan with a high bypass ratio under cross-wind. Results are compared to experimental data. As to be predicted, the body-force modeling approach enables early inlet reattachment. In addition, it provides a representative flow deviation across the fan zone which enables performance and stability assessments.

Copyright © 2017 by ASME

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