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Steady and Unsteady Flow inside a Centrifugal Pump for Two Different Impellers

Received: 21 February 2014     Published: 30 March 2014
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Abstract

Various parameters affect the pump performance. The impeller outlet diameter, the blade angle, the blade number and casing are the most critical. In this study, experimental and numerical investigations are carried out for two impellers different in diameter with the same casing. Numerical simulation of the whole machine (impeller, vaneless diffuser and volute) is performed using CFX-Tascflow commercial code. A frozen rotor simulation model is used for the steady state calculations and the rotor/stator model is used for the unsteady one. The model pump has a design rotation speed 2800 rpm and two impellers with 7 blades (70 mm and 105 mm outer diameters). For each pump, the performance measurements are measured and CFD analyses are carried out for different flow rates for steady and unsteady calculations. Finally, a comparison between the CFD and performance measurement is fairly good.

Published in International Journal of Energy and Power Engineering (Volume 3, Issue 2)
DOI 10.11648/j.ijepe.20140302.15
Page(s) 65-76
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Centrifugal Pump, Unsteady, Steady, CFD

References
[1] Binder, R. C., and Knapp, R. T., 1936, ‘‘Experimental Determination of the Flow Characteristics in the Volutes of Centrifugal Pumps,’’ Trans. ASME, 58, No. 8, p. 659.
[2] Acosta, A. J., and Bo-werman, R. D., 1957, ‘‘An Experimental Study of Centrifugal Pump Impellers,’’ Trans. ASME, 79, pp. 1821–1831.
[3] Stepanoff, A. J., 1957, Centrifugal and Axial Flow Pumps, Wiley, NY.
[4] Agostinelli, A., Nobles, D., and Mockridge, C. R., 1960, ‘‘An Experimental Investigation of Radial Thrust in Centrifugal Pumps,’’ ASME J. Eng. Power, 80, pp. 120–126.
[5] Biheller, H. J., 1965, ‘‘Radial Forces on the Impeller of Centrifugal Pumps with Volute, Semivolute, and Fully Concentric Casings,’’ ASME J. Eng. Power, 85, pp. 319–323.
[6] Hergt, P., and Krieger, P. 1972, ‘‘Radial Forces and Moments Acting on the Impeller of Volute Casing Pumps,’’ Proceedings of the Fourth Conference of Fluid Machinery, Budapest, pp. 599–619.
[7] Kanki, H., Kawata, Y., and Kawatani, T., 1981, ‘‘Experimental Research on the Hydraulic Excitation Force on the Pump Shaft,’’ Proceedings, ASME Design Engineering Technical Conf., 81-DET-71, Sept., Hartford, CT.
[8] Chamieh, D. S., Acosta, A. J., Brennen, C. E., Caughey, T. K., and Franz, R., 1985, ‘‘Experimental Measurements of Hydrodynamic Radial Forces and Stiffness Matrices for a Centrifugal Pump Impeller,’’ ASME J. Fluids Eng., 107, pp. 307–315.
[9] De Ojeda, W., Flack, R. D., and Miner, S. M., 1995, ‘‘Laser Velocimetry Measurements in a Double Volute Centrifugal Pump,’’ Int. J. Rotat. Mach., 1, Nos. 3–4, pp. 199–214.
[10] 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.
[11] 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.
[12] Arndt, N., Acosta, A. J., Brennen, C. E., and Caughey, T. K., 1989, ‘‘Rotor- Stator Interaction in a Diffuser Pump,’’ ASME J. Turbomach., 111, pp. 213–221.
[13] Arndt, N., Acosta, A. J., Brennen, C. E., and Caughey, T. K., 1990, ‘‘Experimental Investigation of Rotor-Stator Interaction in a Centrifugal Pump With Several Vaned Diffusers,’’ ASME J. Turbomach., 112, pp. 98–108.
[14] Meakhail T., Seung O Park, “ A Study of Impeller-Diffuser-Volute Interaction in a Centrifugal Fan“ ASME Journal of Turbomachinery, vol.127, no. 1, 2005, pp 84-90.
[15] 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. 621–626.
[16] Ramesha., Prema K., Sharma, Raghuprasad, Madhusudan M. ” Simulation Of Three Dimensional Flows In Hydraulic Pumps” International journal of Advanced Scientific and Technical Research Issue 1 vol. 1 October, 2011, pp. 62-68.
[17] Bao-ling C., Yong-gang L. and Ying-zi J. “Numerical Simulation of Flow in Centrifugal Pump with Complex Impeller” Journal of Thermal Science, vol. 20, No. 1, 2011, pp 47-52.
[18] Raúl B. , Jorge P. and Eduardo B. “Numerical Analysis of the Unsteady Flow in the Near-Tongue Region in a Volute-Type Centrifugal Pump for Different Operating Points” Computers & Fluids Journal vol. 39,2010, pp. 859-870.
[19] ASC, 1999, ‘‘CFX-TASCflow Documentation Version 2.9.0,’’ Advanced Scientific Computing, Ltd., Waterloo, Ontario, Canada
[20] ASC, 1999, ‘‘CFX-Turbogrid Documentation Version 1.4,’’ Advanced Scientific Computing, Ltd., Waterloo, Ontario, Canada.
Cite This Article
  • APA Style

    Tarek A. Meakhail, Mohamed Salem, Ibrahim Shafie. (2014). Steady and Unsteady Flow inside a Centrifugal Pump for Two Different Impellers. International Journal of Energy and Power Engineering, 3(2), 65-76. https://doi.org/10.11648/j.ijepe.20140302.15

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    ACS Style

    Tarek A. Meakhail; Mohamed Salem; Ibrahim Shafie. Steady and Unsteady Flow inside a Centrifugal Pump for Two Different Impellers. Int. J. Energy Power Eng. 2014, 3(2), 65-76. doi: 10.11648/j.ijepe.20140302.15

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    AMA Style

    Tarek A. Meakhail, Mohamed Salem, Ibrahim Shafie. Steady and Unsteady Flow inside a Centrifugal Pump for Two Different Impellers. Int J Energy Power Eng. 2014;3(2):65-76. doi: 10.11648/j.ijepe.20140302.15

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  • @article{10.11648/j.ijepe.20140302.15,
      author = {Tarek A. Meakhail and Mohamed Salem and Ibrahim Shafie},
      title = {Steady and Unsteady Flow inside a Centrifugal Pump for Two Different Impellers},
      journal = {International Journal of Energy and Power Engineering},
      volume = {3},
      number = {2},
      pages = {65-76},
      doi = {10.11648/j.ijepe.20140302.15},
      url = {https://doi.org/10.11648/j.ijepe.20140302.15},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepe.20140302.15},
      abstract = {Various parameters affect the pump performance. The impeller outlet diameter, the blade angle, the blade number and casing are the most critical. In this study, experimental and numerical investigations are carried out for two impellers different in diameter with the same casing. Numerical simulation of the whole machine (impeller, vaneless diffuser and volute) is performed using CFX-Tascflow commercial code. A frozen rotor simulation model is used for the steady state calculations and the rotor/stator model is used for the unsteady one. The model pump has a design rotation speed 2800 rpm and two impellers with 7 blades (70 mm and 105 mm outer diameters). For each pump, the performance measurements are measured and CFD analyses are carried out for different flow rates for steady and unsteady calculations.  Finally, a comparison between the CFD and performance measurement is fairly good.},
     year = {2014}
    }
    

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  • TY  - JOUR
    T1  - Steady and Unsteady Flow inside a Centrifugal Pump for Two Different Impellers
    AU  - Tarek A. Meakhail
    AU  - Mohamed Salem
    AU  - Ibrahim Shafie
    Y1  - 2014/03/30
    PY  - 2014
    N1  - https://doi.org/10.11648/j.ijepe.20140302.15
    DO  - 10.11648/j.ijepe.20140302.15
    T2  - International Journal of Energy and Power Engineering
    JF  - International Journal of Energy and Power Engineering
    JO  - International Journal of Energy and Power Engineering
    SP  - 65
    EP  - 76
    PB  - Science Publishing Group
    SN  - 2326-960X
    UR  - https://doi.org/10.11648/j.ijepe.20140302.15
    AB  - Various parameters affect the pump performance. The impeller outlet diameter, the blade angle, the blade number and casing are the most critical. In this study, experimental and numerical investigations are carried out for two impellers different in diameter with the same casing. Numerical simulation of the whole machine (impeller, vaneless diffuser and volute) is performed using CFX-Tascflow commercial code. A frozen rotor simulation model is used for the steady state calculations and the rotor/stator model is used for the unsteady one. The model pump has a design rotation speed 2800 rpm and two impellers with 7 blades (70 mm and 105 mm outer diameters). For each pump, the performance measurements are measured and CFD analyses are carried out for different flow rates for steady and unsteady calculations.  Finally, a comparison between the CFD and performance measurement is fairly good.
    VL  - 3
    IS  - 2
    ER  - 

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Author Information
  • Mechanical Power Engineering Department, Faculty of Energy Engineering, Aswan University, Aswan, Egypt

  • Mechanical Power Engineering Department, Faculty of Energy Engineering, Aswan University, Aswan, Egypt

  • Faculty of Engineering, Assiut University, Assiut, Egypt

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