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Analysis of Two Automotive Turbocharger Compressor Radial Vaneless Diffusers for Use in Improving a Performance Prediction Technique

[+] Author Affiliations
H. M. Meese, E. Swain

Loughborough University, UK

Paper No. 2001-GT-0319, pp. V001T03A022; 13 pages
doi:10.1115/2001-GT-0319
From:
  • ASME Turbo Expo 2001: Power for Land, Sea, and Air
  • Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery
  • New Orleans, Louisiana, USA, June 4–7, 2001
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7850-7
  • Copyright © 2001 by ASME

abstract

An experimental and analytical investigation of two automotive centrifugal compressors with a radial vaneless diffusers has been conducted. Static pressure measurements together with 1-D flow assumptions have been used to determine the fluid properties throughout the diffuser and this has provided quantitative estimates of the location and value of the losses occurring in this region.

A correlation of diffuser loss for the two specific geometry’s has been developed. This correlation has been used to extend a 1-D prediction technique to include the vaneless diffuser, enabling the operating range and performance of the diffuser to be predicted from the geometry.

Copyright © 2001 by ASME

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