A Study on the Flow Characteristics of Liquid Phase in Air-Water Model

Air-Water 모델에서 액상의 유동특성에 관한 연구

  • Oh, Yool-Kwon (Department of mechatronics Engineering, Chosun University) ;
  • Seo, Dong-Pyo (Department of mechatronics Engineering, Chosun University) ;
  • Park, Seol-Hyun (Department of mechatronics Engineering, Chosun University)
  • 오율권 (조선대학교 기전공학과) ;
  • 서동표 (조선대학교 기전공학과) ;
  • 박설현 (조선대학교 기전공학과)
  • Published : 2004.03.01


In the present study, the gas injection system based on air-water model was designed to investigate the flow characteristics of liquid phase. A PIV system was applied to analyze the flow pattern in a ladle which gas stated to rise upward from the bottom. Gas flow is one of most important factors which could feature a flow pattern in a gas injection system. As the gas injected into the liquid, the kinetic energy of bubble transfer to liquid phase and a strong circulation flow develops in the liquid phase. Such a flow in the liquid develops vortex and improve the mixing process. Due to the centrifugal force, circulation flow was well developed near both wall sides and upper region respectively. Increasing gas flow was helpful to remove dead zone but, weak flow zone still exists in spite of the increasement of gas flow rate.


PIV;liquid phase;centrifugal force;vortex;dead zone


  1. Sahai, Y. and Guthrie, R. I. L., 'Hydro dynamics of Gas StilTed Melts: PartI Gas liquid Coupling', Metallurgical Transaction B, Vol. 13.B, pp. 193-202, 1982
  2. Sano, M. and Mori, K., 'Fluid Flow and Mixing Characteristics in Gas Stirred Molten Metal Bath'. Transaction ISIJ, Vol. 23, pp. 169-175, 1983 https://doi.org/10.2355/isijinternational1966.23.169
  3. A. H. Castillejos, 'A Study of the Fluid Dynamic Characteristics of Turbulent Gas Liquid Bubble Plumes', Ph.d. Thesis, The University of British Columba, Canada, 1986
  4. H. Turkoglu, 'Transport Processes in Gas Injected Liquid Baths,' Ph. D. Thesis, Drexel University, Philadelphia. 1990
  5. Sano, M. and Mori, K., 'Dynamics of Bubble Swarms in Liquid Metals', Transactions of ISIJ, Vol. 20, pp. 668-674, 1980
  6. A. H. Castillejos, and J. K. Brimacombe, 'Measurement of Physical Characteristics of Bubbles in Gas Liquid plumes; Part II. Local Properties of Turbulent Air Water Plumes in vertically Injected Jets', Metallurgical Transactions B, Vol. 18B, pp. 659-971. 1987b
  7. Sohn, H. C., 'A study on the flow character istics of developing turbulent steady, turbulent oscillatory and turbulent pulsating flows in the entrance region of a curbed duct', Ph.D Thesis, Chosun University, Kwang-ju, Korea. 2000