한국해양공학회:학술대회논문집 (Proceedings of the Korea Committee for Ocean Resources and Engineering Conference)

한국해양공학회 (Korean Society of Ocean Engineers)
권호 표지

PTV를 이용한 수직관 내 슬러리유동의 고체입자 속도계측 연구

A PTV Applied to Measuring the Solid Particle Velocity of Slurry Flow in a Vertical Pipe

  • 양찬규 (한국해양연구원 해양시스템안전연구소) ;
  • 최종수 (한국해양연구원 해양시스템안전연구소) ;
  • 홍섭 (한국해양연구원 해양시스템안전연구소)
  • Yang, Chan-Kyu (Korea Research Institute of Ships and Ocean Engineering/KORDI) ;
  • Choi, Jong-Su (Korea Research Institute of Ships and Ocean Engineering/KORDI) ;
  • Hong, Sup (Korea Research Institute of Ships and Ocean Engineering/KORDI)
  • 발행 : 2001.10.01
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초록

In this paper, particle velocity of slurry flow, a kind of solid-particle two phase flow, was measured by using a particle tracking velocimetry. Particles are modeled by sphere-shaped glass whose diameters are 3mm, 5mm, and 7mm At first, a particle which is falling in the water is captured and analyzed to give their free falling velocity. The falling velocity was very high up to about 4m/sec in the air, which needs special algorithm for the accurate measurement. For the upwelling slurry flow in the straight duct, there are some noises caused by cavity. However, the effect was so small that it does not affect the measurement of large particles. From the preliminary study of applying the PTV to measurement of particle movement in slurry flow, we could find out the optimum value of parameters: threshold value., searching area radius and correlation area size.

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