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Blade Pitch Influence at the Exit Flow Field of an Axial Flow Fan FREE

[+] Author Affiliations
Rafael Ballesteros, Eduardo Blanco, Carlos Santolaria

Universidad de Oviedo, Gijón, Spain

Paper No. 95-GT-191, pp. V001T01A050; 9 pages
doi:10.1115/95-GT-191
From:
  • ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 1: Turbomachinery
  • Houston, Texas, USA, June 5–8, 1995
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7878-1
  • Copyright © 1995 by ASME

abstract

Variable pitch axial flow fans are widely used in industrial applications to satisfy variable operating conditions. In this work, an experimental research on a fan of this kind has been carried out. The performance curves of the fan have been obtained and the flow field has been measured at the best efficiency point of each blade pitch tested and for a lower and higher flow rate, in a fixed plane downstream the rotor with a triple hot-wire probe. The radial and circumferential distributions have been obtained, and maps of the velocity components over a blade channel are shown for each operating condition. The flow structure, including the tip and hub blockage, the blade wakes and the main flow core, is characterized.

Copyright © 1995 by ASME
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