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Pressure Recovery of Collectors With Annular Curved Diffusers FREE

[+] Author Affiliations
Yasutoshi Senoo, Nobumasa Kawaguchi

Kyushu University, Kasugashi, Fukuoka, Japan

Paper No. 83-GT-35, pp. V001T01A015; 6 pages
doi:10.1115/83-GT-35
From:
  • ASME 1983 International Gas Turbine Conference and Exhibit
  • Volume 1: Turbomachinery
  • Phoenix, Arizona, USA, March 27–31, 1983
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7951-1
  • Copyright © 1983 by ASME

abstract

Pressure recovery is examined for axisymmetric annular curved diffusers with various values of inlet/exit area ratio. The conditions of inlet flow include three swirl angles and two values of boundary layer blockage. Then, one of the diffuser is connected to two types of collectors with different size. The discharge pressure is decreased by the collector. The cause is not deterioration of diffuser performance due to asymmetric pressure distribution but formation of a cork screw type vortex flow inside the collector. An attempt to retard the vortex motion was successful by inserting obstructions in the collector. If a large size collector is used together with proper obstructions inside the collector, pressure-rise is possible in the collector rather than pressure drop.

Copyright © 1983 by ASME
Topics: Pressure , Diffusers
This article is only available in the PDF format.

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