한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제5권1호
  • /
  • Pages.22-29
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  • 2007
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  • 1598-8430(pISSN)
  • /
  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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공동수조에서 추종입자로서 기포를 이용한 정량적 가시화에 대한 연구

Study on Quantitative Visualization Using Bubble Tracer in a Cavitation Tunnel

  • 백부근 (해양연구원 해양시스템안전연구소) ;
  • 김경열 (해양연구원 해양시스템안전연구소) ;
  • 조성락 (해양연구원 해양시스템안전연구소) ;
  • 안종우 (해양연구원 해양시스템안전연구소)
  • 발행 : 2007.06.30
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초록

In the present study, naturally generated bubbles were investigated to be sure if they could be adopted as the tracer for PIV techniques. The bubble can be grown from the nuclei melted in the water of tunnel and the size of bubbles is changed through the variation of tunnel pressure. Since the trace ability and appropriate size of tracer are so important for PIV techniques, the characteristics of bubbles as tracer are revealed in terms of trace ability and bubble size with the variation of flow speed and tunnel pressure in this study. In addition, PIV measurements of (low behind a rotating propeller are conducted to confirm the trace ability of bubbles even in a highly vortical flow.

키워드

참고문헌

  1. Lindken, R., Merzkirch, W., 2002, "A novel PIV technique for measurements in multiphase flows and its application to two-phase bubbly flows," Exp. in Fluids, Vol.33, pp.814-825. https://doi.org/10.1007/s00348-002-0500-1
  2. Jansen, P.C.M., 1986, "Laboratory observation of the kinematics in the aerated region of breaking waves," Coast. Eng. Vol.9, pp.453-477. https://doi.org/10.1016/0378-3839(86)90008-6
  3. Govender, K., Mocke, G. P., Alport, M. J., 2002, "Videoimaged surf zone wave and roller structures and flow fields," J. Geophys. Res., Vol.107, pp.3072
  4. Ryu, Yonguk, Chang, Kuang-An, Lim, Ho-Joon, 2005, "Use of bubble image velocimetry for measurement of plunging wave impinging on structure and associated greenwater," Meas. Sci. & Technol. Vol.16, pp.1945-1953. https://doi.org/10.1088/0957-0233/16/10/009
  5. Pereira, Francisco, Castano-Graff, E., Gharib, Morteza, 2006, "Bubble interaction with a propeller flow," Proc. of 26th Symposium on Naval Hydrodynamics, Vol.1, pp.299-307.