Numerical Optimization of a Vaned Shroud Design for Increased Operability Margin in Modern Centrifugal Compressors

[+] Author and Article Information
M. T. Barton, M. L. Mansour, J. S. Liu, D. L. Palmer

 Honeywell Aerospace, 111 S. 34th Street, Phoenix, AZ 85034

J. Turbomach 128(4), 627-631 (Mar 01, 2004) (5 pages) doi:10.1115/1.2187526 History: Received October 01, 2003; Revised March 01, 2004

This paper describes the computational fluid dynamics (CFD) approach coupled with an automated grid generation technique utilized for the numerical optimization of a modern centrifugal compressor with an inducer vaned shroud for increased operability margin. The grid generation process was automated to permit rapid optimization of the impeller and vaned shroud geometry. A three-dimensional, viscous, steady flow, mixing-plane approach was utilized to numerically analyze the impeller and vaned shroud in a coupled fashion to capture the interaction effects. The numerical technique verifies the ability of the vane shroud to extend compressor surge margin at the part-speed operating condition, while maintaining acceptable high-speed performance. CFD analyses confirm that the aerodynamics of the vaned shroud match expectation, and are consistent with the mass-averaged compressor speedline characteristics generated from the CFD results.

Copyright © 2006 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Centrifugal compressor application of vaned shroud

Grahic Jump Location
Figure 2

Isometric view of vaned shroud

Grahic Jump Location
Figure 3

Patented vaned shroud improves surge margin with a clean, simple installation

Grahic Jump Location
Figure 4

Computational fluid dynamics (CFD) model

Grahic Jump Location
Figure 5

Grid detail showing clearance modeling technique

Grahic Jump Location
Figure 6

Pressure ratio versus flow map from ADPAC

Grahic Jump Location
Figure 7

Efficiency versus flow map from ADPAC

Grahic Jump Location
Figure 8

CFD analyses confirms internal flow physics of vaned shroud

Grahic Jump Location
Figure 9

Vaned shroud/impeller flowfield from ADPAC CFD analyses at 85%Nc near-stall showing flow diverted toward impeller hub

Grahic Jump Location
Figure 10

Vaned shroud/impeller flowfield from ADPAC CFD analyses at 100%Nc peak efficiency showing flow admitted through the vanes



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