Browse > Article

Flow Analysis of Bubble and Liquid Phase by Vertical Upward Gas Injection  

서동표 (조선대학교 대학원)
오율권 (조선대학교 기전공학과)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.15, no.9, 2003 , pp. 727-732 More about this Journal
Abstract
In the present study, a PIV measurement and image processing technique were applied in order to investigate the flow characteristics in the gas injected liquid bath. The circulation of liquid was induced by upward bubble flow. Due to the centrifugal force, the flow was well developed near both wall sides than in the center of a bath. The vortex flow irregularly repeated generation and disappearance which helped to accelerate the mixing process. The bubble rise velocity in the bottom region was relatively lower than in the upper region because the energy generated by bubbles' behavior in the region near the nozzle was almost converted into kinetic energy But bubble rise velocity increases with the increase of the axial distance since kinetic energy of rising bubbles is added to buoyancy force. In conclusion, the flow increased bubble rise velocity and the flow of the bottom region became more active.
Keywords
Two-phase plume; Bubble rise velocity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Measurement of physical characteristics of bubbles in gas-liquid plumes;Part II. Local properties of turbulent air-water plumes in vertically injected jets /
[ Castillejos,A.H.;Brimacombe,J.K. ] / Metallurgical Transactions B
2 Characteristics of round vertical gas bubble jets /
[ Tacke,K.H.;Schubert,H.G.;Weber,D.J.;Schwerdtfeger,K. ] / MetalIurgical Transactions B,
3 A Simulation on the two-phase flow characteristics in gas bubble driven circulation systems /
[ Choi,C.R.;Kim,C.N. ] / The Korea Society for Simulation   과학기술학회마을
4 Measurement of physical characteristics of bubbles in gas-liquid plumes; Part I. An improved electroresistivity probe technique /
[ Castillejos,A.H.;Brimacombe,J.K. ] / Metallurgial Transactions B
5 Fluid dynamics in bubble stirred ladles; Part II. Mathematical modeling, /
[ Johansen,S.T.;Boysan,F. ] / Metallurgical Transactions B
6 Fluid dynamics in bubble stirred ladles; Part I. Experiments /
[ Johansen,S.T.;Robertson,D.G.C.;woje,K.;Engh,T.A. ] / Metall. Trans. B.