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TECHNICAL PAPERS

Numerical Study of Unsteady Flow in a Centrifugal Pump

[+] Author and Article Information
Kitano Majidi

Technische Universitaet Berlin, Carnotstr. 1A, D-10587, Germany e-mail: kitano.majidi@tu-berlin.de

J. Turbomach 127(2), 363-371 (May 05, 2005) (9 pages) doi:10.1115/1.1776587 History: Received October 01, 2003; Revised March 01, 2004; Online May 05, 2005
Copyright © 2005 by ASME
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References

Gülich, J. F., 1999, Kreiselpumpen, Ein Handbuch für Entwicklung, Anlagenplanung und Betrieb, Springer, Berlin.
Arndt,  N., Acosta,  A. J., Brennen,  C. E., and Caghey,  T. K., 1990, “Experimental Investigation of Rotor-Stator Interaction in a Centrifugal Pump With Several Vaned Diffusers,” ASME J. Turbomach., 112, pp. 98–107.
Kaupert,  K. A., and Staubli,  T., 1999, “The Unsteady Pressure Field in a High Specific Speed Centrifugal Pump Impeller—Part I: Influence of the Volute,” ASME J. Fluids Eng., 121, pp. 621–629.
Hagelstein,  D., Hillewaert,  K., Van den Braembussche,  R. A., Engeda,  A., Keiper,  R., and Rautenberg,  M., 2000, “Experimental and Numerical Investigation of the Flow in a Centrifugal Compressor Volute,” ASME J. Turbomach., 122, pp. 22–31.
Hillewaert,  K., and Van den Braembussche,  R. A., 1999, “Numerical Simulation of Impeller-Volute Interaction in Centrifugal Compressors,” ASME J. Turbomach., 121, pp. 603–608.
Longatte, F., and Kueny, J. L., 1999, “Analysis of Rotor-Stator-Circuit Interactions in a Centrifugal Pump,” ASME Paper FEDSM99-6866.
Zhang, M., Wang, H., and Tsukamoto, H., 2002, “Numerical Analysis of Unsteady Hydrodynamic forces on a Diffuser Pump Impeller due to Rotor-Stator Interaction,” ASME Paper FEDSM2002-31181.
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.
González, J., Santolaria, C., Blanco, E., and Fernández, J., 2002, “Unsteady Flow Structure on a Centrifugal Pump: Experimental and Numerical Approaches,” ASME Paper FEDSM2002-31182.
Stepanoff, A. J., 1957, Centrifugal and Axial Flow Pumps, Krieger Publishing Company, Malabar, FL.
Majidi, K., 2003, “Numerical Calculation of Impeller/Volute Interaction in a Centrifugal Pump,” Proceedings of the 5th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, pp. 597–606.
Majidi,  K., and Siekmann,  H. E., 2000, “Numerical Calculation of Secondary Flow in Pump Volute and Circular Casing Using 3D Viscous Flow Techniques,” Int. J. Rotating Machinery, 6(4), pp. 245–252.
Majidi, K., 2004, “Unsteady Radial Thrust of a Centrifugal Pump due to the Impeller/Volute Interaction,” Proceedings of the 10th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Pacific Center of Thermal-Fluids Engineering, Paper ISROMAC10-2004-032.

Figures

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Grids of the computational domain
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Location of the investigated nodal points, as well as the relative position of the impeller and volute casing at time=0 (starting the unsteady calculations, initiated from steady-state solutions)
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Unsteady pressure distribution at midspan of the blade passage at ṁ/ṁopt≈1.0
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Unsteady pressure distribution at midspan of the blade passage at ṁ/ṁopt≈0.74
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Unsteady pressure distribution at midspan of the blade passage at ṁ/ṁopt≈1.34
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Unsteady mass flow rate through each blade passage at ṁ/ṁopt≈0.74
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Unsteady mass flow rate through each blade passage at ṁ/ṁopt≈1.3
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Unsteady pressure distribution in the volute casing at ṁ/ṁopt≈1.0
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Unsteady pressure distribution in the volute casing at ṁ/ṁopt≈0.74
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Unsteady pressure distribution in the volute casing at ṁ/ṁopt≈1.34
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Unsteady pressure distribution at the tongue of the casing at ṁ/ṁopt≈1.0
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Unsteady pressure distribution at the tongue of the casing at ṁ/ṁopt≈0.74
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Unsteady pressure distribution at the tongue of the casing at ṁ/ṁopt≈1.34
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Pressure distribution at midspan of the pump (a), pressure distribution (b), and secondary flow (c) in the cross-sectional plane of the volute casing at angular advancement φ=60 deg at three different time steps at off-design point (ṁ/ṁopt≈0.74), 13
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Pressure distribution (a) and secondary flow (b) in the cross-sectional plane of the volute casing at angular advancement φ=260 deg at three different time steps at off-design point (ṁ/ṁopt≈0.74)
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Unsteady blade loading at different test conditions

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