0
RESEARCH PAPERS

Numerical Simulation of Compressor Endwall and Casing Treatment Flow Phenomena

[+] Author and Article Information
A. J. Crook

Allison Gas Turbine Division, Indianapolis, IN 46206

E. M. Greitzer, C. S. Tan

Massachusetts Institute of Technology, Cambridge, MA 02139

J. J. Adamczyk

NASA Lewis Research Center, Cleveland, OH 44135

J. Turbomach 115(3), 501-512 (Jul 01, 1993) (12 pages) doi:10.1115/1.2929280 History: Received February 24, 1992; Online June 09, 2008

Abstract

A numerical study is presented of the flow in the endwall region of a compressor blade row, in conditions of operation with both smooth and grooved endwalls. The computations are first compared to velocity field measurements in a cantilevered stator/rotating hub configuration to confirm that the salient features are captured. Computations are then interrogated to examine the tip leakage flow structure since this is a dominant feature of the endwall region. In particular, the high blockage that can exist near the endwalls at the rear of a compressor blade passage appears to be directly linked to low total pressure fluid associated with the leakage flow. The fluid dynamic action of the grooved endwall, representative of the casing treatments that have been most successful in suppressing stall, is then simulated computationally and two principal effects are identified. One is suction of the low total pressure, high blockage fluid at the rear of the passage. The second is energizing of the tip leakage flow, most notably in the core of the leakage vortex, thereby suppressing the blockage at its source.

Copyright © 1993 by The American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

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 Journal Articles
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