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Large eddy simulation of the transient cavitating vortical flow in a jet pump with special emphasis on the unstable limited operation stage

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Abstract

This paper studies the unsteady three-dimensional cavitating turbulent flow in a jet pump. Specifically, thefocus is on the unstable limited operation stage, and both the computational and experimental methods are used. In the experiments, the distribution of the wall pressure, as well as the evolution of cavitation over time, are obtained for a jet pump. Computation is carried out using the large eddy simulation, combined with a mass transfer cavitation model. The numerical results are compared with the experimental results, including the fundamental performances (the pressure ratio h and the efficiency η), as well as the wall pressure distribution. Both the experimental and computational results indicate that the evolution of the cavitation over time in a jet pump is a quasi-periodic process during the unstable limited operation stage. The annular vortex cavitation inception, development and collapse predicted by the large eddy simulation agree fairly well with the experimental observations. Furthermore, the relationship between the cavitation and the vortex structure is discussed based on the numerical results, and it is shown that the development of the vortex structures in the jet pump is closely related to the evolution of the cavitation. The cavitation-vortex interaction is thoroughly analyzed based on the vorticity transport equation. This analysis reveals that the cavitation in a jet pump dramatically influences the distribution and the production of the vorticity. The process of the annular cavitation inception, development, and collapse involves a significant increase of the vorticity.

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References

  1. Lu H. Theory and application of injection technolog [M]. Wuhan, China: Wuhan University Press, 2004.

    Google Scholar 

  2. Drozdov A. N. Optimization of flow diagrams of multiphase pump-ejector systems for improving their operational efficiency with combined oil and gas gathering [J]. Chemical and Petroleum Engineering, 2014, 50(7–8): 499–503.

    Article  Google Scholar 

  3. Xu M., Ji B., Zou J. et al. Experimental investigation on the transport of different fish species in a jet fish pump [J]. Aquacultural Engineering, 2017, 79: 42–48.

    Article  Google Scholar 

  4. Long X., Wang J., Zhang J. et al. Experimental investigation of the cavitation characteristics of jet pump cavitation reactors with special emphasis on negative flow ratios [J]. Experimental Thermal and Fluid Science, 2018, 96: 33–42.

    Article  Google Scholar 

  5. Jamaluddin A. R., Ball G. J., Turangan C. K. et al. The collapse of single bubbles and approximation of the far-field acoustic emissions for cavitation induced by shock wave lithotripsy [J]. Journal of Fluid Mechanics, 2011, 677: 305–341.

    Article  MathSciNet  Google Scholar 

  6. Franc J. P., Michel J. M. Fundamentals of cavitation [J]. Fluid Mechanics and Its Applications, 2004, 76(11): 1–46.

    MATH  Google Scholar 

  7. Long X., Yao H., Zhao J. Investigation on mechanism of critical cavitating flow in liquid jet pumps under operating limits [J]. International Journal of Heat and Mass Transfer, 2009, 52(9): 2415–2420.

    Article  Google Scholar 

  8. Xiao L., Long X. Cavitating flow in annular jet pumps [J]. International Journal of Multiphase Flow, 2015, 71: 116–132.

    Article  Google Scholar 

  9. Long Y., Long X. P., Ji B. et al. Verification and validation of URANS simulations of the turbulent cavitating flow around the hydrofoil [J]. Journal of Hydrodynamics, 2017, 29(4): 86–96.

    Article  Google Scholar 

  10. Ji B., Long Y., Long X. P. et al. Large eddy simulation of turbulent attached cavitating flow with special emphasis on large scale structures of the hydrofoil wake and turbulence-cavitation interactions [J]. Journal of Hydrodynamics, 2017, 29(1): 27–39.

    Article  Google Scholar 

  11. Cheng H. Y., Long X. P., Ji B. et al. 3-D Lagrangian-based investigations of the time-dependent cloud cavitating flows around a Clark-Y hydrofoil with special emphasis on shedding process analysis [J]. Journal of Hydrodynamics, 2018, 30(1): 122–130.

    Article  Google Scholar 

  12. Senocak I., Wei S. Interfacial dynamics-based modelling of turbulent cavitating flows, Part-1: Model development and steady-state computations [J]. International Journal for Numerical Methods in Fluids, 2004, 44(9): 975–995.

    Article  Google Scholar 

  13. Goncalvès E., Charrière B. Modelling for isothermal cavitation with a four-equation model [J]. International Journal of Multiphase Flow, 2014, 59: 54–72.

    Article  Google Scholar 

  14. Zhu J., Rodi W. Computation of axisymmetric confined jets in a diffuser [J]. International Journal for Numerical Methods in Fluids, 2010, 14(2): 241–251.

    Article  Google Scholar 

  15. Duke D. J., Schmidt D. P., Neroorkar K. et al. High-resolution large eddy simulations of cavitating gasoline-ethanol blends [J]. International Journal of Engine Research, 2013, 14(6): 578–589.

    Article  Google Scholar 

  16. Dittakavi N., Chunekar A., Frankel S. Large eddy simulation of turbulent-cavitation interactions in a venturi nozzle [J]. Journal of Fluids Engineering, 2010, 132(12): 121301.

    Article  Google Scholar 

  17. Ji B., Luo X. W., Arndt R. E. A. et al. Large eddy simulation and theoretical investigations of the transient cavitating vortical flow structure around a NACA66 hydrofoil [J]. International Journal of Multiphase Flow, 2015, 68: 121–134.

    Article  MathSciNet  Google Scholar 

  18. Long X., Cheng H., Ji B. et al. Large eddy simulation and Euler-Lagrangian coupling investigation of the transient cavitating turbulent flow around a twisted hydrofoil [J]. International Journal of Multiphase Flow, 2017, 100: 41–56.

    Article  MathSciNet  Google Scholar 

  19. Xu M. S., Yang X. L., Long X. P. et al. Numerical investigation of turbulent flow coherent structures in annular jet pumps using the LES method [J]. Science China Technological Sciences, 2018, 61(1): 1–12.

    Article  Google Scholar 

  20. Zi H., Zhou L., Meng L. Prediction and analysis of jet pump cavitation using large eddy simulation [J]. Journal of Physics Conference Series, 2015, 656: 012142.

    Article  Google Scholar 

  21. Long X., Zhang J., Wang Q. et al. Experimental investigation on the performance of jet pump cavitation reactor at different area ratios [J]. Experimental Thermal and Fluid Science, 2016, 78: 309–321.

    Article  Google Scholar 

  22. Zwart P. J., Gerber A. G., Belamri T. A two-phase flow model for predicting cavitation dynamics [C]. Fifth International Conference on Multiphase Flow, Yokohama, Japan, 2004, 152.

  23. Samimy M., Webb N., Crawley M. Excitation of free shear-layer instabilities for high-speed flow control [J]. AIAA Journal, 2018, 56(5): 1770–1791.

    Article  Google Scholar 

  24. Long Y., Long X., Ji B. et al. Numerical simulations of cavitating turbulent flow around a marine propeller behind the hull with analyses of the vorticity distribution and particle tracks [J]. Ocean Engineering, 2019, 189: 106310.

    Article  Google Scholar 

  25. Long Y., Long X., Ji B. et al. Verification and validation of large eddy simulation of attached cavitating flow around a Clark-Y hydrofoil [J]. International Journal of Multi-phase Flow, 2019, 115: 93–107.

    Article  MathSciNet  Google Scholar 

  26. Wu Q., Huang B., Wang G. et al. The transient characteristics of cloud cavitating flow over a flexible hydrofoil [J]. International Journal of Multiphase Flow, 2017, 99: 162–173.

    Article  MathSciNet  Google Scholar 

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Authors and Affiliations

  1. Hubei Key Laboratory of Waterjet Theory and New Technology, School of Power and Mechanical Engineering, Wuhan University, Wuhan, 430072, China

    Xin-ping Long, Dan Zuo & Huai-yu Cheng

  2. Key Laboratory of Transients in Hydraulic Machinery, Ministry of Education, Wuhan University, Wuhan, 430072, China

    Xin-ping Long, Dan Zuo & Huai-yu Cheng

  3. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China

    Xin-ping Long, Dan Zuo, Huai-yu Cheng & Bin Ji

Authors
  1. Xin-ping Long
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  2. Dan Zuo
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  3. Huai-yu Cheng
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  4. Bin Ji
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Corresponding author

Correspondence to Xin-ping Long.

Additional information

Project supported by the National Natural Science Foundation of China (Grant Nos. 51679169, 11472197).

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Long, Xp., Zuo, D., Cheng, Hy. et al. Large eddy simulation of the transient cavitating vortical flow in a jet pump with special emphasis on the unstable limited operation stage. J Hydrodyn 32, 345–360 (2020). https://doi.org/10.1007/s42241-019-0034-0

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  • DOI: https://doi.org/10.1007/s42241-019-0034-0

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