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Towards Multiple Operating Point Axial Fan Design

[+] Author Affiliations
Matthias Semel, Viktor Haag, Antonio Delgado

University of Erlangen-Nuremberg, Erlangen, Germany

Julien Grilliat

ebm-papst St. Georgen GmbH & Co. KG, St. Georgen, Germany

Paper No. GT2015-42673, pp. V001T09A006; 10 pages
doi:10.1115/GT2015-42673
From:
  • ASME Turbo Expo 2015: Turbine Technical Conference and Exposition
  • Volume 1: Aircraft Engine; Fans and Blowers; Marine
  • Montreal, Quebec, Canada, June 15–19, 2015
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5662-8
  • Copyright © 2015 by ASME

abstract

The dimensionless performances of an axial fan are derived analytically from an arbitrary work distribution. The formulation is illustrated using five different work distributions at a selected operating point and comparing the resulting hydraulic characteristics. A first validation of the formulation is brought by means of RANS and URANS of an axial fan with free vortex work distribution. It is shown that a single RANS prediction at the design point allows predicting the hydraulic characteristic up to 20% off the design flow rate with very good accuracy. Based on these results, a strategy for axial fan design at multiple operating points is proposed.

Copyright © 2015 by ASME
Topics: Design

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