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Journal of Hydrodynamics

, Volume 24, Issue 4, pp 595–604 | Cite as

Simulation of Hydraulic Transients in Hydropower Systems Using the 1-D-3-D Coupling Approach

  • Xiao-xi Zhang
  • Yong-guang ChengEmail author
Article

Abstract

Although the hydraulic transients in pipe systems are usually simulated by using a one-dimensional (1-D) approach, local three-dimensional (3-D) simulations are necessary because of obvious 3-D flow features in some local regions of the hydropower systems. This paper combines the 1-D method with a 3-D fluid flow model to simulate the Multi-Dimensional (MD) hydraulic transients in hydropower systems and proposes two methods for modeling the compressible water with the correct wave speed, and two strategies for efficiently coupling the 1-D and 3-D computational domains. The methods are validated by simulating the water hammer waves and the oscillations of the water level in a surge tank, and comparing the results with the 1-D solution data. An MD study is conducted for the transient flows in a realistic water conveying system that consists of a draft tube, a tailrace surge tank and a tailrace tunnel. It is shown that the 1-D-3-D coupling approach is an efficient and promising way to simulate the hydraulic transients in the hydropower systems in which the interactions between 1-D hydraulic fluctuations of the pipeline systems and the local 3-D flow patterns should be considered.

Key words

hydropower station hydraulic transients compressible water model coupling of 1-D and 3-D methods 

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References

  1. [1]
    POPESCU M., ARSENIE D. and VLASE P. Applied hydraulic transients for hydropower plants and pumping stations[M]. Rotterdam, The Netherlands: A. A. Balkema, 2003.Google Scholar
  2. [2]
    CHANG Jin-shi. Transients of hydraulic machinery[M]. Beijing: Higher Education Press, 2005, 7–10 (in Chinese).Google Scholar
  3. [3]
    YANG Jian-dong, ZHAO Kun and LI Lin et al. Analysis on the causes of units 7 and 9 accidents at Sayano-Shushenskaya Hydropower Station[J]. Journal of Hydroelectric Engineering, 2011, 30(4): 226–234 (in Chinese).Google Scholar
  4. [4]
    CHENG Yong-guang, SUO Li-sheng. Lattice Boltzmann scheme to simulate two-dimensional fluid transients[J]. Journal of Hydrodynamics, Ser. B, 2003, 15(2): 19–23.Google Scholar
  5. [5]
    KOLŠEK T., DUHOVNIK J. and BERGANT A. Simulation of unsteady flow and runner rotation during shutdown of an axial water turbine[J]. Journal of Hydraulic Research, 2006, 44(1): 129–137.CrossRefGoogle Scholar
  6. [6]
    CHENG Yong-guang, LI Jin-ping and YANG Jian-dong. Free surface-pressurized flow in ceiling-sloping tailrace tunnel of hydropower plant: Simulation by VOF model[J]. Journal of Hydraulic Research, 2007, 45(1): 88–99.MathSciNetCrossRefGoogle Scholar
  7. [7]
    YAN J., KOUTNIK J. and SEIDEL U. et al. Compressible simulation of rotor-stator interaction in pump-turbines[C]. 25th IAHR Symposium on Hydraulic Machinery and Systems. Timisoara, Romania, 2010.Google Scholar
  8. [8]
    LIN Ching-long, TAWHAI H. and MCLENNAN G. et al. Multiscale simulation of gas flow in subject-specific models of the human lung[J]. IEEE Engineering in Medicine and Biology Magazine, 2009, 28(3): 25–33.CrossRefGoogle Scholar
  9. [9]
    HAN Dong, FANG Hong-wei and BAI Jing et al. A coupled 1-D and 2-D channel network mathematical model used for flow calculations in the middle reaches of the Yangtze River[J]. Journal of Hydrodynamics, 2011, 23(4): 521–526.CrossRefGoogle Scholar
  10. [10]
    RUPRECHT A., HELMRICH T. and ASCHENBRENNER T. et al. Simulation of vortex rope in a turbine draft tube[C]. 21st IAHR Symposium on Hydraulic Machinery and Systems. Lausanne, Switzerland, 2002.Google Scholar
  11. [11]
    RUPRECHT A., HELMRICH T. Simulation of the water hammer in a hydro power plant caused by draft tube surge[C]. 4th ASME/JSME Joint Fluids Engineering Conference. Honolulu, Hawaii, USA, 2003.CrossRefGoogle Scholar
  12. [12]
    CHERNY S., CHIRKOV D. and BANNIKOV D. et al. 3D numerical simulation of transient processes in hydraulic turbines[C]. 25th IAHR Symposium on Hydraulic Machinery and Systems. Timisoara, Romania, 2010.Google Scholar
  13. [13]
    GHIDAOUI S., ZHAO M. and MCLNNIS A. et al. A review of water hammer theory and practice[J]. Applied Mechanics Reviews, 2005, 58: 49–76.CrossRefGoogle Scholar
  14. [14]
    WU Wang-yi. Fluid mechanics[M]. Beijing: Peking University Press, 2009, 171–179 (in Chinese).Google Scholar
  15. [15]
    LIU Qi-zhao, HU Ming. Hydropower station[M]. 4th Edition, Beijing: China Water Power Press, 2010, 214–216 (in Chinese).Google Scholar

Copyright information

© China Ship Scientific Research Center 2012

Authors and Affiliations

  1. 1.State Key Laboratory of Water Resources and Hydropower Engineering ScienceWuhan UniversityWuhanChina

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