Skip to main content

Advertisement

SpringerLink
Log in

Analysis of the vortices in the inner flow of reversible pump turbine with the new omega vortex identification method

  • Published:
Journal of Hydrodynamics Aims and scope Submit manuscript

Abstract

Reversible pump turbines are widely employed in the pumped hydro energy storage power plants. The frequent shifts among various operational modes for the reversible pump turbines pose various instability problems, e.g., the strong pressure fluctuation, the shaft swing, and the impeller damage. The instability is related to the vortices generated in the channels of the reversible pump turbines in the generating mode. In the present paper, a new omega vortex identification method is applied to the vortex analysis of the reversible pump turbines. The main advantage of the adopted algorithm is that it is physically independent of the selected values for the vortex identification in different working modes. Both weak and strong vortices can be identified by setting the same omega value in the whole passage of the reversible pump turbine. Five typical modes (turbine mode, runaway mode, turbine brake mode, zero-flow-rate mode and reverse pump mode) at several typical guide vane openings are selected for the analysis and comparisons. The differences between various modes and different guide vane openings are compared both qualitatively in terms of the vortex distributions and quantitatively in terms of the areas of the vortices in the reversible pump turbines. Our findings indicate that the new omega method could be successfully applied to the vortex identification in the reversible pump turbines.

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. Zhang Y., Zhang Y., Wu Y. A review of rotating stall in reversible pump turbine [J]. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2017, 231(7): 1181–1204.

    Google Scholar 

  2. Dörfler P., Sick M., Coutu A. Flow-induced pulsation and vibration in hydroelectric machinery: Engineer’s guide-book for planning, design and troubleshooting [M]. London, UK: Springer-Verlag, 2013.

    Book  Google Scholar 

  3. Wu Y., Li S., Liu S. et al. Vibration of hydraulic machi-nery [M]. Dordrecht, The Netherlands: Springer Science+ Business Media, 2013.

    Book  Google Scholar 

  4. Zhang Y., Tang N., Niu Y. et al. Wind energy rejection in China: Current status, reasons and perspectives [J]. Renewable and Sustainable Energy Reviews, 2016, 66(12): 322–344.

    Article  Google Scholar 

  5. Zhang Y., Chen T., Li J. et al. Experimental study of load variations on pressure fluctuations in a prototype reversible pump turbine [J]. Journal of Fluids Engineering, 2017, 139(7): 074501.

    Article  Google Scholar 

  6. Li J. W., Zhang Y. N. Experimental investigations of a prototype reversible pump turbine in generating mode with water head variations [J]. Science China Techno-logical Sciences, 61(4): 604–611.

  7. Li D., Wang H., Qin Y. et al. Numerical simulation of hysteresis characteristic in the hump region of a pump-turbine model [J]. Renewable Energy, 2018, 115: 433–447.

    Article  Google Scholar 

  8. Li D., Wang H., Qin Y. et al. Entropy production analysis of hysteresis characteristic of a pump-turbine model [J]. Energy Conversion and Management, 2017, 149: 175–191.

    Article  Google Scholar 

  9. Tao R., Xiao R., Wang F. et al. Cavitation behavior study in the pump mode of a reversible pump-turbine [J]. Renewable Energy, 2018, 125: 655–667.

    Article  Google Scholar 

  10. Egusquiza E., Valero C., Valentin D. et al. Condition mo-nitoring of pump-turbines. New challenges [J]. Measure-ment, 2015, 67: 151–163.

    Google Scholar 

  11. Egusquiza E., Valero C., Presas A. et al. Analysis of the dynamic response of pump turbine impellers. Influence of the rotor [J]. Mechanical Systems and Signal Processing, 2016, 68: 330–341.

    Article  Google Scholar 

  12. Li J. W., Zhang Y. N., Liu K. H. et al. Numerical simula-tion of hydraulic force on the impeller of reversible pump turbines in generating mode [J]. Journal of Hydrody-namics, 2017, 29(4): 603–609.

    Article  Google Scholar 

  13. Widmer C., Staubli T., Ledergerber N. Unstable characte-ristics and rotating stall in turbine brake operation of pump-turbines [J]. Journal of Fluids Engineering, 2011, 133(4): 041101.

    Article  Google Scholar 

  14. Hasmatuchi V., Farhat M., Roth S. et al. Experimental evidence of rotating stall in a pump-turbine at off-design conditions in generating mode [J]. Journal of Fluids Engineering, 2011, 133(5): 051104.

    Article  Google Scholar 

  15. Zhang Y., Liu K., Xian H. et al. A review of methods for vortex identification in hydroturbines [J]. Renewable and Sustainable Energy Reviews, 2018, 81(Part 1): 1269–1285.

    Article  Google Scholar 

  16. Zhang Y., Guo Z., Du X. Wave propagation in liquids with oscillating vapor-gas bubbles [J]. Applied Thermal Engineering, 2018, 133(3): 483–492.

    Article  Google Scholar 

  17. Zhang Y., Guo Z., Gao Y. et al. Acoustic wave propaga-tion in bubbly flow with gas, vapor or their mixtures [J]. Ultrasonics Sonochemistry, 2018, 40 (Part B): 40–45.

    Article  Google Scholar 

  18. Zhang Y., Qian Z., Ji B. et al. A review of microscopic interactions between cavitation bubbles and particles in silt-laden flow [J]. Renewable and Sustainable Energy Reviews, 2016, 56: 303–318.

    Article  Google Scholar 

  19. Jeong J., Hussain F. On the identification of a vortex [J]. Journal of Fluid Mechanics, 1995, 285: 69–94.

    Article  MathSciNet  MATH  Google Scholar 

  20. Hunt J., Wary A., Moin P. Eddies, streams, convergence zones in turbulent flows [C]. Proceedings of the Summer Program 1988 in its Studying Turbulence Using Nume-rical Simulation Databases, Stanford, California, USA, 1988, 193–208.

    Google Scholar 

  21. Liu C., Wang Y., Yang Y. et al. New omega vortex identi-fication method [J]. Science China Physics Mechanics and Astronomy, 2016, 59(8): 1–9.

    Article  Google Scholar 

  22. Liu C., Gao Y., Tian S. et al. Rortex a new vortex vector definition and vorticity tensor and vector decompositions [J]. Physics of Fluids, 2018, 30(3): 035103.

    Article  Google Scholar 

  23. Dong X., Tian S., Liu C. Correlation analysis on volume vorticity and vortex in late boundary layer transition [J]. Physics of Fluids, 2018, 30(1): 014105.

    Article  Google Scholar 

  24. Chen T., Zheng X. H., Zhang Y. N. et al. Influence of upstream disturbance on the draft-tube flow of Francis turbine in part-load conditions [J]. Journal of Hydrodynamics, 2018, 30(1): 131–139.

    Article  Google Scholar 

  25. Gentner C., Sallsberger M., Widmer C. et al. Compre-hensive experimental and numerical analysis of instability phenomena in pump turbines [C]. IOP Conference Series: Earth and Environmental Science, 2014, 22(3): 032046.

    Article  Google Scholar 

  26. Zhang Y., Gao Y., Guo Z. et al. Effects of mass transfer on damping mechanisms of vapor bubbles oscillating in liquids [J]. Ultrasonics Sonochemistry, 2018, 40 (Part A): 120–127.

    Article  Google Scholar 

  27. Cui P., Zhang A. M., Wang S. et al. Ice breaking by a collapsing bubble [J]. Journal of Fluid Mechanics, 2018, 841: 287–309.

    Google Scholar 

  28. Suo D., Govind B., Zhang S. et al. Numerical investigation of the inertial cavitation threshold under multi-frequency ultrasound [J]. Ultrasonics sonochemistry, 2018, 41: 419–426.

    Article  Google Scholar 

  29. Suo D., Jin Z., Jiang X. et al. Microbubble mediated dual-frequency high intensity focused ultrasound thrombolysis: An In vitro study [J]. Applied Physics Letters, 2017, 110(2): 023703.

    Article  Google Scholar 

  30. Zhang Y., Zhang Y. Chaotic oscillations of gas bubbles under dual-frequency acoustic excitation [J]. Ultrasonics Sonochemistry, 2018, 40(Part B): 151–157.

    Article  Google Scholar 

  31. Zhang Y., Gao Y., Du X. Stability mechanisms of oscilla-ting vapor bubbles in acoustic fields [J]. Ultrasonics Sonochemistry, 2018, 40(Part A): 808–814.

    Article  Google Scholar 

  32. Xiang G., Wang B. Numerical study of a planar shock interacting with a cylindrical water column embedded with an air cavity [J]. Journal of Fluid Mechanics, 2017, 825: 825–852.

    Article  MathSciNet  Google Scholar 

Download references

Acknowledgement

This work was supported by the Open Research Fund Program of Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University (Grant No. szjj-2017-100-1-003), the Open Founda- tion of National Research Center of Pumps, Jiangsu University (Grant No. NRCP201601).

Author information

Authors and Affiliations

  1. Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, 610039, China

    Yu-ning Zhang  (张宇宁)

  2. Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (Ministry of Education), North China Electric Power University, Beijing, 102206, China

    Yu-ning Zhang  (张宇宁), Kai-hua Liu  (刘凯华), Hai-zhen Xian  (冼海珍) & Xiao-ze Du  (杜小泽)

  3. Beijing South-to-North Water Diversion Tuancheng Lake Management Office, Beijing, 100195, China

    Kai-hua Liu  (刘凯华)

  4. China Institute of Water Resources and Hydropower Research, Beijing, 100048, China

    Jin-wei Li  (李金伟)

Authors
  1. Yu-ning Zhang  (张宇宁)
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kai-hua Liu  (刘凯华)
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Jin-wei Li  (李金伟)
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Hai-zhen Xian  (冼海珍)
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Xiao-ze Du  (杜小泽)
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yu-ning Zhang  (张宇宁).

Additional information

Project supported by the National Key R&D Program of China (Project No. 2018YFB0604304-04), the National Natural Science Foundation of China (Grant No. 51506051).

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Zhang, Yn., Liu, Kh., Li, Jw. et al. Analysis of the vortices in the inner flow of reversible pump turbine with the new omega vortex identification method. J Hydrodyn 30, 463–469 (2018). https://doi.org/10.1007/s42241-018-0046-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s42241-018-0046-1

Key words

Search

Navigation