한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제26권3호
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  • Pages.61-65
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  • 2012
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  • 1225-0767(pISSN)
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  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
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다위상 유체 속도 계측을 위한 영상기법 적용

Multi-phase Flow Velocity Measurement Technique using Shadow Graphic Images

  • 류용욱 (현대건설(주) 연구개발본부) ;
  • 정광효 (동의대학교 조선해양공학과)
  • Ryu, Yong-Uk (R&D center, Hyundai Engineering and Construction Co. Ltd.) ;
  • Jung, Kwang-Hyo (Dept. of Naval Architecture and Ocean Engineering, Dong-Eui University)
  • 투고 : 2012.06.11
  • 심사 : 2012.06.19
  • 발행 : 2012.06.30
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초록

Air-water flow measurements are of importance for the coastal and ocean engineering fields. Although kinematic investigations of the multi-phase flows have been conducted for long time, velocity measurements still are concerned with many researchers and engineers in coastal and ocean areas. In the present study, an imaging technique using shadowgraphy and fiber optic probe for velocity measurements of air bubbles is introduced. The shadow graphy image technique is modified from the typical image velocimetry methods, and optical fibers are used for the well-known intrusive coupled phase-detection probe system. Since the imaging technique is a non-intrusive optical method from the air, it is usually applied for 2D flows. On the other hand, the double fiber optic probes touch flows regardless of flow patterns. The results of the flow measurements by both methods are compared and discussed. The methods are also applied to the measurements of overtopping flows by a breaking wave over the structure fixed on the free surface.

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참고문헌

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피인용 문헌

  1. Application of Image Technique and Optical Fiber Sensor for Air-water Mixture Flow vol.48, pp.7, 2015, https://doi.org/10.3741/JKWRA.2015.48.7.535
  2. Experimental Study on Behavior of Green Water for Rectangular Structure vol.30, pp.1, 2016, https://doi.org/10.5574/KSOE.2016.30.1.044
  3. Experimental Study on Variations in Behavior of Green Water and Flow Kinematics on Deck with Various Flare Angles vol.32, pp.2, 2018, https://doi.org/10.26748/KSOE.2018.4.32.2.077