The Inlet Flow Structure of a Centrifugal Compressor Stage and Its Influence on the Compressor Performance-Reference-Cited by-同舟云学术

The Inlet Flow Structure of a Centrifugal Compressor Stage and Its Influence on the Compressor Performance

Published:2003-09-01 Issue:5 Volume:125 Page:779-785
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Engeda Abraham¹,Kim Yunbae¹,Aungier Ronald²,Direnzi Gregory²

Affiliation:

1. Turbomachinery Laboratory, Mechanical Engineering Department, Michigan State University, East Lansing, MI 48824

2. Product Development, Elliott Company, Jeannette, PA

Abstract

The performance of centrifugal compressors can be seriously degraded by inlet flow distortions that result from an unsatisfactory inlet configuration. In this present work, the flow is numerically simulated and the flow details are analyzed and discussed in order to understand the performance behavior of the compressor exposed to different inlet configurations. In a previous work, complementary to this present work, experimental tests were carried out for the comparison of a centrifugal compressor stage performance with two different inlet configurations: one of which was a straight pipe with constant cross-sectional area and the other a 90-deg curved pipe with nozzle shape. The comparative test results indicated significant compressor stage performance difference between the two different inlet configurations. Steady-state compressor stage simulation including the impeller and diffuser with three different inlets has been carried out to investigate the influence of each inlet type on the compressor performance. The three different inlet systems included a proposed and improved inlet model. The flow from the bend inlet is not axisymmetric in the circumferential and radial distortion, thus the diffuser and the impeller are modeled with fully 360-deg passages.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/125/5/779/5833895/779_1.pdf

Reference15 articles.

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2. Reid, C., 1969, “The Response of Axial Flow Compressors to Intake Flow Distortions,” ASME Paper No. 69-GT-29.

3. Ariga, I., Kasai, N., Masuda, S., Watanabe, Y., and Watanabe, I., 1982, “The Effect of Inlet Distortion on the Performance Characteristics of a Centrifugal Compressor,” ASME Paper No. 82-GT-92.

4. Roberge, J. A., and Mathisen, P. P., 1999, “Sensitivity Analyses to Assess the Use of CFD to Predict the Occurrence of Vortices Near Pump Intakes,” ASME/JSME Joint Fluids Engineering Conference, Paper No. FEDSM99-7224.

5. Cain, S. A., and Padmanabhan, M., 1999, “Numerical Simulation of Flow Distribution and Swirl Due to a Combined Pipe Bend,” ASME/JSME Joint Fluids Engineering Conference, Paper No. FEDSM99-7217.

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