skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Off-design flow measurements in a centrifugal compressor vaneless diffuser

Abstract

Detailed measurements have been taken of the three-dimensional velocity field within the vaneless diffuser of a backswept low speed centrifugal compressor using hot-wire anemometry. A 16% below and an 11% above design flow rate were used in the present study. Results at both flow rates show how the blade wake mixes out more rapidly than the passage wake. Strong secondary flows inherited from the impeller at the higher flow rate delay the mixing out of the circumferential velocity variations, but at both flow rates these circumferential variations are negligible at the last measurement station. The measured tangential/radial flow angle is used to recommend optimum values for the vaneless space and vane angle for design of a vaned diffuser.

Authors:
 [1];  [2]
  1. Univ. of Cumhuriyet, Sivas (Turkey). Dept. of Mechanical Engineering
  2. Univ. of Liverpool (United Kingdom). Dept. of Mechanical Engineering
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
136537
Report Number(s):
CONF-940626-
Journal ID: JOTUEI; ISSN 0889-504X; TRN: IM9552%%79
Resource Type:
Journal Article
Journal Name:
Journal of Turbomachinery
Additional Journal Information:
Journal Volume: 117; Journal Issue: 4; Conference: 39. international gas turbine and aeroengine congress and exposition, The Hague (Netherlands), 13-16 Jun 1994; Other Information: PBD: Oct 1995
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; GAS COMPRESSORS; GAS FLOW; DIFFUSERS; PERFORMANCE; VELOCITY

Citation Formats

Pinarbasi, A, and Johnson, M W. Off-design flow measurements in a centrifugal compressor vaneless diffuser. United States: N. p., 1995. Web. doi:10.1115/1.2836574.
Pinarbasi, A, & Johnson, M W. Off-design flow measurements in a centrifugal compressor vaneless diffuser. United States. https://doi.org/10.1115/1.2836574
Pinarbasi, A, and Johnson, M W. 1995. "Off-design flow measurements in a centrifugal compressor vaneless diffuser". United States. https://doi.org/10.1115/1.2836574.
@article{osti_136537,
title = {Off-design flow measurements in a centrifugal compressor vaneless diffuser},
author = {Pinarbasi, A and Johnson, M W},
abstractNote = {Detailed measurements have been taken of the three-dimensional velocity field within the vaneless diffuser of a backswept low speed centrifugal compressor using hot-wire anemometry. A 16% below and an 11% above design flow rate were used in the present study. Results at both flow rates show how the blade wake mixes out more rapidly than the passage wake. Strong secondary flows inherited from the impeller at the higher flow rate delay the mixing out of the circumferential velocity variations, but at both flow rates these circumferential variations are negligible at the last measurement station. The measured tangential/radial flow angle is used to recommend optimum values for the vaneless space and vane angle for design of a vaned diffuser.},
doi = {10.1115/1.2836574},
url = {https://www.osti.gov/biblio/136537}, journal = {Journal of Turbomachinery},
number = 4,
volume = 117,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 1995},
month = {Sun Oct 01 00:00:00 EDT 1995}
}