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TECHNICAL PAPERS

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

[+] Author and Article Information
Abraham Engeda, Yunbae Kim

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

Ronald Aungier, Gregory Direnzi

Product Development, Elliott Company, Jeannette, PA

J. Fluids Eng 125(5), 779-785 (Oct 07, 2003) (7 pages) doi:10.1115/1.1601255 History: Received July 30, 2001; Revised April 26, 2003; Online October 07, 2003
Copyright © 2003 by ASME
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References

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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.
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.
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.
Cheng, K. C., Lin, R. C., and Ou, J. W., 1975, “Fully Developed Laminar Flow in Curved Rectangular Channels,” ASME Paper No. 75-FE-4.
Kim,  Y., Engeda,  A., Aungier,  R., and Direnzi,  G., 2001, “The Influence of Inlet Flow Distortion on the Performance of a Centrifugal Compressor and the Development of Improved Inlet Using Numerical Simulations,” IMechE Part A, Journal of Power and Energy,215, pp. 1–16.
Flathers,  M., and Bache,  G. E., 1999, “Aerodynamically Induced Radial Forces in a Centrifugal Gas Compressor: Part 2—Computational Investigation,” ASME J. Eng. Gas Turbines Power, 121, pp. 725–734.
Gu,  F., Engeda,  A., Cave,  M., and Di Liberti,  J.-L., 2001, “A Numerical Investigation on the Volute/Diffuser Interaction Due to the Axial Distortion at the Impeller Exit,” ASME J. Fluids Eng., 123, pp. 475–483.
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Lakshminarayana,  B., 1991, “An Assessment of Computational Fluid Dynamics Techniques in the Analysis and Design of Turbomachinery,” ASME J. Fluids Eng., 113, pp. 315–325.
Fisher,  E., and Inoue,  M., 1981, “A Study of Diffuser/Rotor Interaction in a Centrifugal Compressor,” J. Mech. Eng. Sci., 23, pp. 149–156.
Dawes,  W., 1995, “A Simulation of the Unsteady Interaction of a Centrifugal Impeller With Its Vaned Diffuser: Flow Analysis,” ASME J. Turbomach., 117, pp. 213–222.
Shum,  Y., Tan,  C., and Cumpsty,  N., 2000, “Impeller-Diffuser Interaction in a Centrifugal Compressor,” ASME J. Turbomach., 122, pp. 777–786.
Fatsis, A., Pierret, S., and Van den Braembussche, R., 1995, “3-D Unsteady Flow and Forces in Centrifugal Impellers With Circumferential Distortion of the Outlet Static Pressure,” ASME Paper No. 95-GT-33.

Figures

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Flow angle comparison at design point (DP)
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Secondary flow structure in a bend inlet
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Vane spacing for the location of each vane to be inserted in bp2 model; (a) bp0 (original bend inlet), (b) bp2 (two vane inserted model), (c) sp_equi_bp
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Grid of inlet models used for compressor stage simulation
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Convention of the stations on compressor cross section
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Grid of 360-deg impeller and diffuser
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Head coefficient comparison
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Stage efficiency comparison
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Total pressure loss coefficient comparison
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Diffuser pressure recovery coefficient comparison

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