Skip to main content
SpringerLink
Log in

Numerical and experimental investigation of a single stage centripetal pump

Numerische und messtechnische Untersuchung einer einstufigen Zentripetalpumpe

  • Originalarbeiten/Originals
  • Published:
Forschung im Ingenieurwesen Aims and scope Submit manuscript

Abstract

In the present paper a numerical and experimental investigation of a single stage centripetal pump (SSCP) is presented. The SSCP was designed using CAD and CFD tools. The performance curves of the SSCP were measured in a test facility with water involved as the working media and compared with the calculated ones. The measured performance curves are characterised by the region of hysteresis since the throttle closing performance curves do not correspond completely to the throttle opening performance curves. The delivery head and efficiency are abruptly decreased when reducing the flow rate from the point of the maximum delivery head. Due to the evident analogy of the SSCP and the axial-flow compressors performance curves and similarities in the rotor design it can be anticipated that such an operating behaviour of the SSCP is caused by the rotating stall phenomenon. CFD simulations confirm that the stalling of the rotor passages causes the steep delivery head drop when decreasing the flow rate from the point of maximum head.

Zusammenfassung

Der Artikel behandelt eine numerische und messtechnische Untersuchung einer einstufigen Zentripetalpumpe (SSCP). Die SSCP wurde mit dem Einsatz von CAD- und CFD-Werkzeugen entwickelt. Die Kennlinien der SSCP wurden in einer Testanlage mit Wasser als Arbeitsmedium aufgenommen und mit berechneten Kennlinien verglichen. Die gemessenen Kennlinien werden mit einem Hysteresegebiet charakterisiert, weil die Kennlinien, die bei der Verminderung des Förderstromes erhalten werden, mit den Kennlinien, erhalten durch die Vergrößerung des Förderstromes, nicht übereinstimmen. Die Förderhöhe und der Wirkungsgrad werden stark verringert, wenn der Förderstrom über den Punkt der maximalen Förderhöhe vermindert wird. Durch die offensichtliche Analogie der Kennlinien und Laufradformähnlichkeiten der SSCP und Axialkompressoren kann man voraussehen, dass ein derartiges Betriebsverhalten der SSCP durch das Auftreten einer umlaufenden Strömungsablösung verursacht wird. Es wird im Rahmen von CFD Simulationen bestätigt, dass bei der Verminderung des Förderstromes über den Punkt der maximalen Förderhöhe, die Förderhöhe und der Wirkungsgrad infolge der intensiven Ablösungserscheinung in den Rotorkanälen stark verringert werden.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Sekavcnik M (1998) Radial Turbine for Smaller Power. Doctor Thesis, Faculty of Mechanical Engineering, University of Ljubljana, Slovenia

  2. Sekavcnik M, Tuma M, Florjancic D (1998) Characteristics of One Stage Radial Centrifugal Turbine. ASME, Proceedings of the 1998 International Gas Turbine & Aeroengine Congress & Exhibition, Stockholm, Sweden

  3. Sekavcnik M, Tuma M, Florjancic D (1999) Messtechnische Untersuchungen einer einstufigen Radialturbine. Forsch Ingenieurwes 65(1):13–19

    Article  Google Scholar 

  4. Sekavcnik M, Drobnic B, Tuma M (2002) Numerical Investigation of Single Stage Radial Centrifugal Turbine. 1st International Conference on Heat Transfer, Fluid Mechanics, and Thermodynamics, Kruger Park, South Africa

  5. Petermann H (1951) Untersuchungen am Zentripetalrad fuer Kreiselverdichter. Forschung auf dem Gebiete des Ingenieurwesens 17(2):51–59

    Article  Google Scholar 

  6. Pfleiderer C (1961) Die Kreiselpumpen fuer Fluessigketen und Gase, 5. Auflage. Springer, Berlin Goettingen Heidelberg, pp 235–236

    Google Scholar 

  7. Gantar T, Sekavcnik M (2007) Operating Regimes of an Unconventional Radial Pump Stage. Forsch Ingenieurwes 71(2):89–97

    Article  Google Scholar 

  8. Muggli F et al. (2002) CFD Calculation of a Mixed Flow Pump Characteristic From Shutoff to Maximum Flow. J Fluid Eng Trans ASME 124(3):798–802

    Article  Google Scholar 

  9. Asuaje M et al. (2005) Numerical Modelisation of the Flow in Centrifugal Pump: Volute Influence in Velocity and Pressure Fields. Int J Rotat Mach 3:244–255

    Article  Google Scholar 

  10. Braun O et al. (2005) Numerical Analysis of Flow Phenomena Related to the Unstable Energy-Discharge Characteristic of a Pump-Turbine in Pump Mode. ASME Fluids Engineering Division Summer Meeting, Houston, Tx, USA.

  11. Cravero C, Marini M (2002) Modelling of Incompressible Three-Dimensional Flow in Rotating Turbomachinery Passages. ASME Fluids Engineering Division Summer Meeting, Montreal, Quebec, Canada.

  12. ANSYS CFX Help (2005) ANSYS CFX-Solver, Release 10.0: Theory. pp 67–81

  13. ANSYS CFX Help (2005) ANSYS CFX-Solver, Release 10.0: Modelling. pp 136–137

  14. ISO 5167 (1991) Measurement of fluid flow by means of pressure differential devices – Part 1: Orifice plates, nozzles and Venturi tubes inserted in circular cross-section conduits running full. 1st edn.

  15. ISO 9906 (1999) Rotodynamic pumps – Hydraulic performance acceptance tests – Grades 1 and 2

  16. Day IJ (2004) Stall and Surge. Cambridge Turbomachinery Course, Robinson College Cambridge, Whittle Laboratory, Department of Engineering, University of Cambridge

  17. Day IJ et al. (1978) Prediction of Compressor Performance in Rotating Stall. Trans ASME J Eng Power 100(1):1–14

    Google Scholar 

  18. Greitzer EM (1978) Surge and Rotating Stall in Axial Flow Compressors, Part I: Theoretical Compression System Model. Trans ASME J Eng Power 98(2):190–198

    Google Scholar 

  19. Greitzer EM (1978) Surge and Rotating Stall in Axial Flow Compressors, Part II: Experimental Results and Comparison With Theory. Trans ASME J Eng Power 98(2):199–217

    Google Scholar 

  20. Guelich JF (1999) Kreiselpumpen, Ein Handbuch fuer Entwicklung, Anlageplanung und Betrieb, 1. Aufl. Springer, Berlin, pp 54–112

    Google Scholar 

  21. Idelchik IE (1986) Handbook of Hydraulic Resistance, 2nd Edition. Hemisphere Publishing Corporation, Washington, pp 425–459

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Envita, d.o.o., Trzaska 132, 1000, Ljubljana, Slovenia

    T. Gantar

  2. Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000, Ljubljana, Slovenia

    M. Sekavčnik & M. Mori

Authors
  1. T. Gantar
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Sekavčnik
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. M. Mori
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to M. Sekavčnik.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Gantar, T., Sekavčnik, M. & Mori, M. Numerical and experimental investigation of a single stage centripetal pump . Forsch Ingenieurwes 72, 53–65 (2008). https://doi.org/10.1007/s10010-008-0067-y

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10010-008-0067-y

Keywords

Search

Navigation