Velocity and turbulence measurements in a cylindrical bath subject to centric bottom gas injection |
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| Authors: | Manabu Iguchi Tsuneo Kondoh Zen-Ichiro Morita Keiji Nakajima Kazuharu Hanazaki Tomomasa Uemura Fujio Yamamoto |
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| Affiliation: | (1) Department of Materials Science and Processing, Faculty of Engineering, Osaka University, Suita, 565 Osaka, Japan;(2) Sumitomo Metal Industries, Ltd., Wakayama, Japan;(3) Iron and Steel Research Laboratories, Sumitomo Metal Industries, Ltd., Amagasaki, 660 Hyogo, Japan;(4) Sumitomo Metal Industries,Ltd., Kashima, Ibaragi;(5) Kansai University, Suita, Osaka, Japan;(6) Faculty of Engineering, Fukui University, Fukui, 910, Japan |
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| Abstract: | Laser Doppler velocimeter (LDV) measurements were made to clarify the fluid flow behavior in a bath subject to centric bottom
gas injection. Correlations of the axial mean velocity and turbulence components in the gas-liquid two-phase flow region,i.e., in the bubbling jet region, were proposed as functions of the inner diameter of nozzle, gas flow rate, and densities of
gas and liquid. Measured values of the flow rate, momentum, and kinetic energy of water rising upward were approximated satisfactorily
by these empirical correlations. In addition, the Reynolds shear stress was calculated and compared with measured values.
Formerly Graduate Student, Osaka University, |
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