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TECHNICAL PAPERS

Flow at the Centrifugal Pump Impeller Exit With Circumferential Distortion of the Outlet Static Pressure

[+] Author and Article Information
Soon-Sam Hong

Turbopump Department, Korea Aerospace Research Institute, Daejeon 305-333, Korea

Shin-Hyoung Kang

School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea

J. Fluids Eng 126(1), 81-86 (Feb 19, 2004) (6 pages) doi:10.1115/1.1637630 History: Received November 07, 2001; Revised June 23, 2003; Online February 19, 2004
Copyright © 2004 by ASME
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References

Sideris,  M. T., and Van den Braembussche,  R. A., 1987, “Influence of a Circumferential Exit Pressure Distortion on the Flow in an Impeller and Diffuser,” ASME J. Turbomach., 109, pp. 48–54.
Fatsis,  A., Pierret,  S., and Van den Braembussche,  R., 1997, “Three-Dimensional Unsteady Flow and Forces in Centrifugal Impellers With Circumferential Distortion of the Outlet Static Pressure,” ASME J. Turbomach., 119, pp. 94–102.
Hagelstein, D., Van den Braembussche, R. A., Keiper, R., and Rautenberg, M., 1997, “Experimental Investigation of the Circumferential Static Pressure Distortion in Centrifugal Compressor Stages,” ASME Paper No. 97-GT-50.
Sorokes, J. M., Borer, C. J., and Koch, J. M., 1998, “Investigation of the Circumferential Static Pressure Non-Uniformity Caused by a Centrifugal Compressor Discharge Volute,” ASME Paper No. 98-GT-326.
Sorokes, J. M., and Koch, J. M., 2000, “The Influence of Low Solidity Vaned Diffusers on the Static Pressure Non-Uniformity Caused by a Centrifugal Compressor Discharge Volute,” ASME Paper No. 2000-GT-0454.
Knapp,  R. T., 1937, “Complete Characteristics of Centrifugal Pumps and Their Use in the Prediction of Transient Behavior,” Trans. ASME, 59, pp. 683–689.
Van den Braembussche,  R. A., Ayder,  E., Hagelstein,  D., Rautenberg,  M., and Keiper,  R., 1999, “Improved Model for the Design and Analysis of Centrifugal Compressor Volutes,” ASME J. Turbomach., 121, pp. 619–625.
Shim, C. Y., Hong, S. S., and Kang, S. H., 2000, “Flow Evaluations of Centrifugal Pump Impeller Using Commercial Code,” Proceedings of the Korean Fluid Machinery Association Annual Meeting, Busan, Dec. 1–2, pp. 285–292.
Inoue,  M., and Cumpsty,  N. A., 1984, “Experimental Study of Centrifugal Impeller Discharge Flow in Vaneless and Vaned Diffusers,” ASME J. Eng. Gas Turbines Power, 106, pp. 455–467.
Frigne,  P., and Van den Braembussche,  R. A., 1985, “A Theoretical Model for Rotating Stall in the Vaneless Diffuser of a Centrifugal Compressor,” ASME J. Eng. Gas Turbines Power, 107, pp. 507–513.
Hoffmann, K. A., and Chiang, S. T., 1993, Computational Fluid Dynamics for Engineers, Engineering Education System, Wichita, Kansas.

Figures

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Schematic view of the test rig
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Measurement location and details of the impeller with the fence
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Definition of circumferential position in the outward-unfolded 2-sine fence
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Static pressure rise at the impeller exit without fence
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Distribution of mean radial and tangential velocity at three flow rates without fence
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Distribution of mean radial and tangential velocity at four circumferential positions with 2-sine fence at ϕ=0.069
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Distribution of averaged flow parameters with 2-sine fence at ϕ=0.069: (a) radial, tangential, and absolute velocity, and (b) static and total pressure.
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Distribution of averaged flow parameters plotted against local flow rate with 2-sine fence at ϕ=0.069: (a) total pressure, (b) static pressure, (c) tangential velocity, and (d) relative flow angle.
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Measured and predicted velocity components with 2-sine fence (parameter=β2) at ϕ=0.069: (a) radial velocity, and (b) tangential velocity.
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Measured and predicted velocity components with 2-sine fence (parameter=Pt2) at ϕ=0.069: (a) radial velocity, and (b) tangential velocity.
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Static pressure calculated by CFD with 2-sine fence at ϕ=0.069: impeller excluded in CFD.

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