International Journal of Fluid Machinery and Systems

한국유체기계학회 (Korean Society for Fluid machinery)
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Experimental Study and Numerical Simulation of Cavity Oscillation in a Diffuser with Swirling Flow

  • Chen, Chang-Kun (Graduate School of Engineering Science, Osaka University) ;
  • Nicolet, Christophe (Laboratory for Hydraulic Machines, EPFL - Swiss Federal Institute of Technology) ;
  • Yonezawa, Koichi (Graduate School of Engineering Science, Osaka University) ;
  • Farhat, Mohamed (Laboratory for Hydraulic Machines, EPFL - Swiss Federal Institute of Technology) ;
  • Avellan, Francois (Laboratory for Hydraulic Machines, EPFL - Swiss Federal Institute of Technology) ;
  • Miyazawa, Kazuyoshi (Nagasaki R&D Center, Mitsubishi Heavy Industries, LTD) ;
  • Tsujimoto, Yoshinobu (Laboratory for Hydraulic Machines, EPFL - Swiss Federal Institute of Technology)
  • 투고 : 2010.03.19
  • 심사 : 2010.03.24
  • 발행 : 2010.03.01
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초록

The cavity oscillation with swirling flow in hydraulic power generating systems was studied by a simple experiment and numerical simulation. Several types of fluctuation were observed in the experiment, including the cavitation surge caused by the diffuser effect and the vortex precession by the swirling flow. Both cavitation surge and vortex precession were simulated by CFD. Detailed flow structure was examined through flow visualization and CFD.

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참고문헌

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  8. Chen, C., Nicolet, C., Yonezawa, K., Farhat, M., Avellen, F., Tsujimoto, Y., “One-Dimensional Analysis of Full Load Draft Tube Surge,” ASME Journal of Fluids Engineering, vol.130, Issue 4, 041106. https://doi.org/10.1115/1.2903475
  9. Chen, C., Nicolet, C., Yonezawa, K., Farhat, M., Avellen, F., Miyazawa, K., Tsujimoto, Y., “Experimental Study and Numerical Simulation of Cavity Oscillation in a Conical Diffuser,” Submitted to International Journal of Fluid Machinery and System, 2010.

피인용 문헌

  1. Numerical simulation of cavitation surge and vortical flows in a diffuser with swirling flow vol.30, pp.6, 2016, https://doi.org/10.1007/s12206-016-0511-0
  2. A Study of Transient Flow Modes in a Hydraulic Turbine Draft Tube Model vol.50, pp.1, 2016, https://doi.org/10.1007/s10749-016-0650-6
  3. Suppression of unsteady swirl flow in the draft tube of a Francis hydro turbine model using J-Groove vol.31, pp.12, 2017, https://doi.org/10.1007/s12206-017-1123-z
  4. Vortex ropes in draft tube of a laboratory Kaplan hydroturbine at low load: an experimental and LES scrutiny of RANS and DES computational models vol.55, pp.5, 2017, https://doi.org/10.1080/00221686.2017.1300192
  5. Cavitation instabilities in hydraulic machines vol.52, pp.1, 2013, https://doi.org/10.1088/1757-899X/52/1/012005
  6. Long-Period Pressure Pulsation Estimated in Numerical Simulations for Excessive Flow Rate Condition of Francis Turbine vol.136, pp.7, 2014, https://doi.org/10.1115/1.4026584