0

Stability of Conical and Curved Annular Diffusers for Mixed-Flow Compressors FREE

[+] Author Affiliations
A. Abir

Research Products, Rehovot, Israel

A. Whitfield

University of Bath

Paper No. 87-GT-191, pp. V001T01A066; 7 pages
doi:10.1115/87-GT-191
From:
  • ASME 1987 International Gas Turbine Conference and Exhibition
  • Volume 1: Turbomachinery
  • Anaheim, California, USA, May 31–June 4, 1987
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7923-8
  • Copyright © 1987 by ASME

abstract

For mixed-flow compressors the downstream vaneless diffuser can be either a straight or curved annular passage. Investigations have been carried out on model diffusers six times larger than those employed in a turbocharger study, Whitfield et al (1978). This made it possible to carry out detailed internal flow measurements using a five hole yaw probe and a hot wire anemometer. The development of the flow profiles throughout the diffuser were studied with particular reference to the onset of unstable conditions. Flush mounted wall pressure transducers were also used to detect the onset of unstable flows and to measure the extent and development of the unsteady conditions.

Two curved and one straight annular diffusers have been tested in order to study their relative merits. In addition, the results obtained with a straight radial diffuser are included for comparison. It has generally been observed that the straight annular diffuser was the least stable, with the radial diffuser exhibiting the best stability characteristics. Of the two curved annular diffusers tested flow stability was improved by reducing the passage width. In both cases, however, the curved diffuser proved to be clearly superior to the simpler straight design.

Copyright © 1987 by ASME
This article is only available in the PDF format.

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In