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Article

An Evaluation of Impeller Blade Torque During an Impeller–Diffuser Interaction

[+] Author and Article Information
Kevin A. Kaupert

Ebara Cryodynamics International, 350 Salomon Circle, Sparks, NV 89434

J. Fluids Eng 126(6), 960-965 (Mar 11, 2005) (6 pages) doi:10.1115/1.1839929 History: Received May 27, 2003; Revised July 09, 2004; Online March 11, 2005
Copyright © 2004 by ASME
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References

Florjancic, D., 2000, “The Future of the Pump Industry,” Proceedings of the 17th International Pump Users Symposium, Houston, TX, March.
Cooper,  P., 1997, “Perspective: The New Face of R&D—A Case Study of the Pump Industry,” ASME J. Fluids Eng., 118, No 4, December, pp. 654–664.
Dean,  C. D., 1959, “On the Necessity of Unsteady Flow in Fluid Machines,” J. Basic Eng., March, pp. 24–28.
Traupel, W., 1966, Thermische Turbomaschinen, Springer Verlag, Heidelberg.
Kaupert,  K. A., and Staubli,  T., 1998, “Ecoulement Instationnaire dans une Roue d’une Pompe Centrifuge,” Houille Blanche , 3/4, (3/4), pp. 45–51.
González,  J., Fernández,  J., Blanco,  E., and Santolaria,  C., 2002, “Numerical Simulation of the Dynamic Effects Due to Impeller-Volute Interaction in a Centrifugal Pump,” ASME J. Fluids Eng., 124, pp. 348–355.
Dong,  R., Chu,  S., and Katz,  J., 1997, “Effect of Modification to Tongue and Impeller Geometry on Unsteady Flow, Pressure Fluctuations, and Noise in a Centrifugal Pump,” ASME J. Turbomach., 119, pp. 506–515.
Sun,  J., and Tsukamoto,  H., 2001, “Off Design Performance Prediction for Diffuser Pumps, Institute of Mechanical Engineers,” Journal of Power Energy—Part A,215, pp. 191–201.
Wang,  H., and Tsukamoto,  H., 2003, “Experimental and Numerical Study of Unsteady Flow in a Diffuser Pump at Off-Design Conditions,” ASME J. Fluids Eng., 125, pp. 767–778.
Vavra, M., 1960, Aero-Thermodynamics and Flow in Turbomachines, Wiley, New York.
Arndt,  N. K. E., Acosta,  A. J., Brennen,  C. E., and Caughey,  T. K., 1989, “Experimental Investigation of Rotor Stator Interaction in a Centrifugal Pump With Several Vaned Diffusers,” ASME J. Turbomach., 112, pp. 98–108.
API 610 1995, Centrifugal Pumps for Petroleum, Heavy Duty Chemical, and Gas Industry Services, 8th ed., American Petroleum Institute, August, Washington, USA.

Figures

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Geometry of the tested impeller and combined diffuser–return vane. Shroud removed for viewing.
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Solid model view of the 10 stage pump hydraulics that were used to obtain measurments
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Circumferential averaged total pressure coefficient
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Tangential velocity for 10 time steps at the bep flow along a traversal of control volume outlet surface S2
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Comparison of the measured and computed single stage characteristics in LNG
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Comparison of moment contribution terms at bep over 1/5 rotation
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Comparison of moment contribution terms at 120% bep over 1/5 rotation
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Comparison of moment contribution terms at 65% bep over 1/5 rotation
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The expression for the axial moment (torque) in terms of blade contributions and fluid contributions
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Control volume and control surfaces in the impeller

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