Bubble and liquid flow characteristics in a cylindrical bath during swirl motion of bubbling jet |
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| Authors: | Manabu Iguchi Tsuneo Kondoh Tomomasa Uemura Fujio Yamamoto Zen-ichiro Morita |
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| Affiliation: | (1) Dept. Materials Science and Processing, Fac. Eng. Osaka University, 2-1Yamadaoka, Suita, 565 Osaka, Japan;(2) Graduate School, Osaka University, 2-1 Yamadaoka, Suita, 565 Osaka, Japan;(3) Dept. Industrial Engineering, Fac. Eng., Kansai University, 3-3-35 Yamate, Suita, 564 Osaka, Japan;(4) Dept. Mechanical Engineering, Fac. Eng. Fukui University, 3-9-1 Bunkyo, 910 Fukui, Japan |
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| Abstract: | Gas injection into a cylindrical bath through a centric bottom nozzle causes a swirl motion like rotary sloshing. Conditions indicating the initiation and cessation of the swirl motion have been made clear by many researchers. So far, the effect of the swirl motion on transport phenomena in the bath is not clear yet. The present study was made to clarify the bubble characteristics (void fraction, bubble frequency) and liquid flow characteristics (mean velocity, turbulence intensity, Reynolds shear stress) during swirl motion of bubbling jet. These two characteristics were investigated using an electro-resistivity probe and a two-dimensional LDV, respectively. |
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