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Numerical Simulation of Centrifugal Pump and Effect of Impeller Geometry on Its Performance

Received: 2 April 2019     Accepted: 15 May 2019     Published: 4 June 2019
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Abstract

In the presented paper, the effect of impeller geometric parameters on the performance of centrifugal pump has been investigated. This study was performed for different flow rates and rotational speeds, allowing to obtain the performance curve for the centrifugal pump. Three dimensional computational fluid dynamic simulation of the impeller and volute for a centrifugal pump has been performed using ANSYS CFX software (a high-performance computational fluid dynamics software tool that delivers reliable and accurate solutions). The pump has an outside impeller diameter of 205 mm, impeller outlet width of 16 mm, rotational speed 1450 rpm, seven impeller blade and a specific speed of 28. By increasing the impeller outer diameter and outlet width, both net head and power consumed are increased. In addition, it was noticed that the best efficiency point (BEP) was achieved at volume flow rate higher than design flow rate. The performed simulations indicated that; by changing the impeller outer diameter from 200 mm to 210 mm, the flow rate of BEP increases about by 14.7%. By changing the impeller outlet width from 14 mm to 18 mm, the flow rate of BEP increased by about 9%, and the efficiency of BEP reduced by approximately 0.5%. It was also noticed that, increasing the rotational speed will cause an increase in the net head and consumed power. An increase of 13.8% for the flow rate of BEP was observed when changing the rotational speed from 1400 rpm to 1500 rpm, with the same BEP.

Published in Engineering and Applied Sciences (Volume 4, Issue 2)
DOI 10.11648/j.eas.20190402.11
Page(s) 21-29
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), 2019. Published by Science Publishing Group

Keywords

Centrifugal Pump, Impeller Diameter, Rotational Speed, Impeller Width

References
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[5] W. Li, " Numerical study on behavior of a centrifugal pump when delivering viscous oils – Part 1: Performance", International Journal of Turbo and Jet Engines, 2008, 25, 61-79.
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[7] W. Li, "Influence of the number of impeller blades on the performance of centrifugal oil pumps" World Pumps, 2002, 32–35.
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[9] G. Kergourlay, M. Younsi, F. Bakir and R. Rey, "Influence of splitter blades on the flow field of a centrifugal pump: Test-analysis comparison", International Journal of Rotating Machinery, 2007, Article ID 85024, 13 pages.
[10] M. Shojaee, F. Boyaghchi and M. Ehghaghi, "Experimental study and three dimensional numerical flow simulation in a centrifugal pump when handling viscous fluids", IUST International Journal of Engineering Science, 2006, 17(3-4), 53-60.
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[18] J. Anagnostopoulos, "Numerical calculation of the flow in a centrifugal pump impeller using Cartesian grid", Proceedings of the 2nd WSEAS Int. Conference on Applied and Theoretical Mechanics, Venice, Italy, November 20-22, 2006.
[19] J. Anagnostopoulos, A fast numerical method for flow analysis and blade design in centrifugal pump impeller", Journal of computer and fluid, 2008, pp 284-289.
[20] E. Bacharoudis, A. Filios, M. Mentzos and D. Margaris, “Parametric Study of a Centrifugal Pump Impeller by Varying the Outlet Blade Angle” The Open Mechanical Engineering Journal, 2008, 2, 75-83.
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Cite This Article
  • APA Style

    Mohamed Hassan Gobran, Mostafa Mohamed Ibrahim, Ramy Elsayed Shaltout, Mahmoud Ahmed Shalaby. (2019). Numerical Simulation of Centrifugal Pump and Effect of Impeller Geometry on Its Performance. Engineering and Applied Sciences, 4(2), 21-29. https://doi.org/10.11648/j.eas.20190402.11

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    ACS Style

    Mohamed Hassan Gobran; Mostafa Mohamed Ibrahim; Ramy Elsayed Shaltout; Mahmoud Ahmed Shalaby. Numerical Simulation of Centrifugal Pump and Effect of Impeller Geometry on Its Performance. Eng. Appl. Sci. 2019, 4(2), 21-29. doi: 10.11648/j.eas.20190402.11

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    AMA Style

    Mohamed Hassan Gobran, Mostafa Mohamed Ibrahim, Ramy Elsayed Shaltout, Mahmoud Ahmed Shalaby. Numerical Simulation of Centrifugal Pump and Effect of Impeller Geometry on Its Performance. Eng Appl Sci. 2019;4(2):21-29. doi: 10.11648/j.eas.20190402.11

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  • @article{10.11648/j.eas.20190402.11,
      author = {Mohamed Hassan Gobran and Mostafa Mohamed Ibrahim and Ramy Elsayed Shaltout and Mahmoud Ahmed Shalaby},
      title = {Numerical Simulation of Centrifugal Pump and Effect of Impeller Geometry on Its Performance},
      journal = {Engineering and Applied Sciences},
      volume = {4},
      number = {2},
      pages = {21-29},
      doi = {10.11648/j.eas.20190402.11},
      url = {https://doi.org/10.11648/j.eas.20190402.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eas.20190402.11},
      abstract = {In the presented paper, the effect of impeller geometric parameters on the performance of centrifugal pump has been investigated. This study was performed for different flow rates and rotational speeds, allowing to obtain the performance curve for the centrifugal pump. Three dimensional computational fluid dynamic simulation of the impeller and volute for a centrifugal pump has been performed using ANSYS CFX software (a high-performance computational fluid dynamics software tool that delivers reliable and accurate solutions). The pump has an outside impeller diameter of 205 mm, impeller outlet width of 16 mm, rotational speed 1450 rpm, seven impeller blade and a specific speed of 28. By increasing the impeller outer diameter and outlet width, both net head and power consumed are increased. In addition, it was noticed that the best efficiency point (BEP) was achieved at volume flow rate higher than design flow rate. The performed simulations indicated that; by changing the impeller outer diameter from 200 mm to 210 mm, the flow rate of BEP increases about by 14.7%. By changing the impeller outlet width from 14 mm to 18 mm, the flow rate of BEP increased by about 9%, and the efficiency of BEP reduced by approximately 0.5%. It was also noticed that, increasing the rotational speed will cause an increase in the net head and consumed power. An increase of 13.8% for the flow rate of BEP was observed when changing the rotational speed from 1400 rpm to 1500 rpm, with the same BEP.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Numerical Simulation of Centrifugal Pump and Effect of Impeller Geometry on Its Performance
    AU  - Mohamed Hassan Gobran
    AU  - Mostafa Mohamed Ibrahim
    AU  - Ramy Elsayed Shaltout
    AU  - Mahmoud Ahmed Shalaby
    Y1  - 2019/06/04
    PY  - 2019
    N1  - https://doi.org/10.11648/j.eas.20190402.11
    DO  - 10.11648/j.eas.20190402.11
    T2  - Engineering and Applied Sciences
    JF  - Engineering and Applied Sciences
    JO  - Engineering and Applied Sciences
    SP  - 21
    EP  - 29
    PB  - Science Publishing Group
    SN  - 2575-1468
    UR  - https://doi.org/10.11648/j.eas.20190402.11
    AB  - In the presented paper, the effect of impeller geometric parameters on the performance of centrifugal pump has been investigated. This study was performed for different flow rates and rotational speeds, allowing to obtain the performance curve for the centrifugal pump. Three dimensional computational fluid dynamic simulation of the impeller and volute for a centrifugal pump has been performed using ANSYS CFX software (a high-performance computational fluid dynamics software tool that delivers reliable and accurate solutions). The pump has an outside impeller diameter of 205 mm, impeller outlet width of 16 mm, rotational speed 1450 rpm, seven impeller blade and a specific speed of 28. By increasing the impeller outer diameter and outlet width, both net head and power consumed are increased. In addition, it was noticed that the best efficiency point (BEP) was achieved at volume flow rate higher than design flow rate. The performed simulations indicated that; by changing the impeller outer diameter from 200 mm to 210 mm, the flow rate of BEP increases about by 14.7%. By changing the impeller outlet width from 14 mm to 18 mm, the flow rate of BEP increased by about 9%, and the efficiency of BEP reduced by approximately 0.5%. It was also noticed that, increasing the rotational speed will cause an increase in the net head and consumed power. An increase of 13.8% for the flow rate of BEP was observed when changing the rotational speed from 1400 rpm to 1500 rpm, with the same BEP.
    VL  - 4
    IS  - 2
    ER  - 

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

  • Mechanical Power Engineering Department, Faculty of Engineering, Zagazig University, Zagazig, Egypt

  • Mechanical Power Engineering Department, Faculty of Engineering, Zagazig University, Zagazig, Egypt

  • Jushi Egypt for Fiberglass Industry S.A.E, Port Said, Egypt

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