Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Study on the Interaction between Particles and Surrounding Fluid

입자와 주위유체와의 상호작용에 관한 연구

  • ;
  • T.Kurihara ;
  • H. Monji ;
  • G. Matsui
  • 최해만 (한국표준과학연구원 Univ, of Taukuba) ;
  • ;
  • ;
  • Published : 2002.02.01
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Abstract

The fundamental mechanism of a dispersed two-phase flow was investigated. Experiments were carried out to understand how the particles behaves under the influence of the particle size, shape, metamorphoses (bubble) and buoyancy of a single particle which is ascending from the standstill water. Two CCD cameras were employed for image processing of the behavior of the particles and the surrounding flow, which was interpreted with the technique of correlation PIV (Particle Image Velocimetry) and PTV (Particle Tracking Veloci- metry), respectively The experimental results showed that the large density difference bet- ween a particle and water caused high relative velocity and induced zigzag motion of the particle. Furthermore, the turbulence intensity of a bubble was about twice the case of the spherical solid particle of similar diameter.

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References

  1. Int.J.Multiphase Flow v.6-6 The transverse migration of bubbles influenced by walls in vertical bubby flow Zun I
  2. Int.J.Multiphase Flow v.3-1 Effect of wall friction and vortex generation on the radial distribution of different phase Rouhani Z
  3. Chem.Eng.Sci. v.43-5 Nearwake structure of a single gas bubble in a Two dimensional liquid-solid fluidized bed vortex shedding and wake size variation Tsuchiya K;Fan L.S
  4. Two-Phase Flow Modelling and Experimentation 1995 v.Ⅱ Edizioni ETS Matsui G;Monji.H;G.P.Celata(ed.);R.K.Shah(ed.)
  5. 1st European-Japanese Two-Phase Flow Group Meeting PIV measurement of flow field around a bubble Matsui G;Monji.H
  6. 9th Int.Sym.on Flow Visualization Measurement of velocity field and a particle/bubble motion by PIV and PTV Monji,H;Matsui,G
  7. Phy.Zeutschrift v.13-2 Uber den Mechanisms ges Flussigkeits und Luftwiderstandes Karman Th.V;Rubach H
  8. J.Fluid Mech. v.55 An Investigation of Particle Trajectories in Two-Phase Flow Systems Moris S.A;Alexander A.J
  9. Chem.Eng.Prog. v.49-2 Studies on the Motion of Gas Bubbles in liquids Peebles F.N;Garber H.J