Evaluation of the Accuracy of Centrifugal Pumps Complete Characteristics and Their Approximation Using Fourier Series

Authors

  • Krzysztof Karaśkiewicz Instytute of Heat Engineering, Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warsaw, Poland
  • Jacek Szymczyk Instytute of Heat Engineering, Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warsaw, Poland

DOI:

https://doi.org/10.13052/ijfp1439-9776.2612

Keywords:

Rotodynamic pumps, complete pump characteristics, abnormal states of pump operation

Abstract

The complete characteristics used by commercial codes to simulate failures in pumping systems encountered e.g. in power plants, date back many decades. Since then, pump design methods have changed, resulting in, among others, the increase of their efficiency and the stability of characteristics. There is a need to see how these changes have affected the complete characteristics in a full range of pump operation. In the article, it is shown that the new complete characteristics give different failure simulation results than the old ones. Describing the dynamic pump operation, understood as determining the basic parameters that change at any time, such as: flow, lifting height, driving torque and rotational speed, is very important, especially for large installations whose operation is of key importance. A convenient form for analysing dynamic states are Suter functions based on inverse trigonometric functions, because they allow showing all pump operating states using one continuous (other than e.g. spline) function. Therefore, as an approximation of the exact characteristics, Fourier harmonic functions were proposed. The effect of the approximation on the accuracy of the simulation was checked.

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Author Biographies

Krzysztof Karaśkiewicz, Instytute of Heat Engineering, Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warsaw, Poland

Krzysztof Karaśkiewicz received the master’s degree in Mechanical Engineering from Warsaw University of Technology in 1979, and the philosophy of doctorate degree in Mechanical Engineering from Warsaw University of Technology in 1994. He worked in the pumping industry running the research and development department, among other things. He is currently working as an Associate Professor at the Department of Rational Use of Energy, Faculty of Power and Aeronautical Engineering, Warsaw University of Technology. His research areas include pumps, pumping systems, fluid transients, energy efficiency in power engineering and in the industry. https://orcid.org/0000-0003-4709-2355.

Jacek Szymczyk, Instytute of Heat Engineering, Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warsaw, Poland

Jacek Szymczyk was born in Warsaw, Poland, in 1975. He received his master’s degree in Mechanical Engineering from Warsaw University of Technology in 2001, and the philosophy of doctorate degree in Mechanical Engineering from Warsaw University of Technology in 2007. He is currently working as an Assistant Professor at the Department of Rational Use of Energy, Faculty of Power and Aeronautical Engineering, Warsaw University of Technology. His research areas include pumps and pumping systems, industrial water purification, energy storage and harvesting, and energy efficiency in power engineering and in the industry. https://orcid.org/0000-0002-9718-6467

References

A. Papierski, A. Błaszczyk, Multilevel Optimization of the Semi-Open Impeller in a Centrifugal Pump, Mechanics and Mechanical Engineering, Vol. 15, No. 3 (2011) 319–332.

H. Ayremlouzadeh, S. Jafarmadar, S. Reza, A. Niaki, ‘Investigation on the Effect of Impeller Design Parameters on Performance of a Low Specific Speed Centrifugal Pump Using Taguchi Optimization Method’, International Journal of Fluid Power, vol. 23 Iss 2, pp. 161–182. doi: 10.13052/ijfp1439-9776.2322.

D. Thoma, ‘Vorgäange beim Ausfallen des Antriebes von Kreiselpumpen’, Mitteilungen des Hydralischen Instituts der Technischen Hochschule München, vol. 4, pp. 102-104; also Kittredge, C.P., Thoma, D., 1931, “Centrifugal Pumps Operated Under Abnormal Conditions”, Power, June 2, pp. 881–884, 1931.

R. T. Knapp, ‘Complete Characteristics of Centrifugal Pumps and Their Use in Prediction of Transient Behavior’, Trans. ASME, vol. 59, pp. 683–689, 1953.

W. M. Swanson, ‘Complete Characteristic Circle Diagrams for Turbomachinery’, Trans. ASME Journal of Fluids Engineering, 75(5), pp. 819–826, 1953.

A. J. Stepanoff, ‘Centrifugal and Axial Flow Pumps’, J.Wiley: N.York, USA, 1957.

E. B. Wylie, V. L. Streeter, “Fluid Transients in Systems’, Journal of Fluid Mechanics, Vol. 264, 1993. DOI: https://doi.org/10.1017/S0022112094210716.

R. J. Brown, D. C. Rogers, ‘Development of Pump Characteristics from Field Tests’, Journal of Mechanical Design, ASME, 102(4), 1980. DOI: 10.1115/1.3254826.

I. A. Lipatov, I. V. Elkin, A. I. Antonova, G. I. Dremin, A. V. Kapustin, S. M. Nikonov, A. A. Rovnov, V. I. Gudkov, ‘Four-quadrant characteristics of PSB-VVER pumps’. Proceedings of the International Conference Nuclear Energy for New Europe 2005, Bled, Slovenia, September 5–8, 2005, pp. 056.1–10, 2005.

E. Ayder, A. N. Ilikan, M. Sen, C. Özgür, L. Kavurmacioğlu, K. Kirkkopru, ‘Experimental investigation of the complete characteristics of rotodynamic pumps’, ASME 2009 Fluids Engineering Division Summer Meeting, Vail, Colorado, 2–6 August, pp. 35-40, 2009.

I. S. Yoo, M. R. Park, S. C. Hwang, E. S. Yoon, ‘Complete Characteristic Curve for a Reactor Coolant Pump’, Journal of Fluid Machinery, Vol. 15, no. 5, 2012.

R. Zhu, Y. Liu, X. Wang, Q. Fu, A. Yang, Y. Long, ‘The research on AP1000 nuclear main pumps’ complete characteristics and the normalization method’. Annals of Nuclear Energy, 99, pp. 1–8, 2017.

K. Karaśkiewicz, ‘Sensitivity analysis for power plant pumping systems in breakdown’, Archive of Mechanical Engineering, 65, pp. 349–359, 2018.

P. Singh, ‘Optimization of Internal Hydraulics and of System Design for pumps as turbines with field implementation and evaluation’, PhD dissertation, Universität Fridericiana zu Karlsruhe, 2005.

S. Derakhshan, A. Nourbakhsh, ‘Theoretical, Numerical and Experimental Investigation of Centrifugal Pumps in Reverse Operation’, Experimental Thermal and Fluid Science, 32, pp. 1620–1627, 2008.

A. L. Couzinet, L. Gros, D. Pierrat, ‘Characteristics of Centrifugal Pumps Working in Direct or Reverse Mode: Focus on the Unsteady Radial Thrust’, International Journal of Rotating Machinery, 2013. DOI: 10.1155/2013/279049.

X. Tan, A. Engeda, ‘Performance of Centrifugal Pumps Running in Reverse as Turbine Part II Systematic Specific Speed and Specific’, Renewable Energy, 99, pp. 188–197, 2016.

S. Barbarelli, M. Amelio, G. Florio, ‘Experimental activity at test rig validating correlations to select pumps running as turbines in microhydro plants’, Energy Conversion and Management, 149, pp. 781–797, 2017.

Joint Committee for Guides in Metrology, ‘Evaluation of measurement data – Guide to the expression of uncertainty in measurement’, 2008.

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Published

2025-04-06

How to Cite

Karaśkiewicz, K. ., & Szymczyk, J. . (2025). Evaluation of the Accuracy of Centrifugal Pumps Complete Characteristics and Their Approximation Using Fourier Series. International Journal of Fluid Power, 26(01), 25–42. https://doi.org/10.13052/ijfp1439-9776.2612

Issue

2025: Vol 26 Iss 1

Section

Original Article