| 一串上升气泡周围流体的湍动特性(英文) |
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| 引用本文： | 李少白,马友光,朱春英,付涛涛,李怀志. 一串上升气泡周围流体的湍动特性(英文)[J]. 中国化学工程学报, 2012, 20(5): 883-888. DOI: 10.1016/S1004-9541(12)60413-3 |
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| 作者姓名： | 李少白 马友光 朱春英 付涛涛 李怀志 |
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| 作者单位： | 1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;2. Laboratory of Reactions and Process Engineering, Nancy-Université, CNRS, 1, rue Grandville, BP 20451, 54001. Nancy Cedex, France |
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| 基金项目： | Supported by the National Natural Science Foundation of China (21076139);the Opening Project of State Key Laboratory of Chemical Engineering (SKL-ChE-08B03);the Program of Introducing Talents of Discipline to Universities (B06006) |
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| 摘 要： | The turbulence behavior of gas-liquid two-phase flow plays an important role in heat transfer and mass transfer in many chemical processes. In this work, a 2D particle image velocimetry (PIV) was used to investigate the turbulent characteristic of fluid induced by a chain of bubbles rising in Newtonian and non-Newtonian fluids. The instantaneous flow field, turbulent kinetic energy (TKE) and TKE dissipation rate were measured. The results demonstrated that the TKE profiles were almost symmetrical along the column center and showed higher values in the central region of the column. The TKE was enhanced with the increase of gas flow and decrease of liquid viscosity. The maximum TKE dissipation rate appeared on both sides of the bubble chain, and increased with the increase of gas flow rate or liquid viscosity. These results provide an understanding for gas-liquid mass transfer in non-Newtonian fluids.
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| 关 键 词： | non-Newtonian fluid gas-liquid two-phase flow turbulent kinetic energy turbulent kinetic energy dissipation rate |
| 收稿时间： | 2011-04-25 |
Turbulent Characteristic of Liquid Around a Chain of Bubbles in Non-Newtonian Fluid |
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| LI Shaobai,MA Youguang,ZHU Chunying,FU Taotao,and LI Huaizhi. Turbulent Characteristic of Liquid Around a Chain of Bubbles in Non-Newtonian Fluid[J]. Chinese Journal of Chemical Engineering, 2012, 20(5): 883-888. DOI: 10.1016/S1004-9541(12)60413-3 |
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| Authors: | LI Shaobai MA Youguang ZHU Chunying FU Taotao and LI Huaizhi |
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| Affiliation: | 1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;2. Laboratory of Reactions and Process Engineering, Nancy-Université, CNRS, 1, rue Grandville, BP 20451, 54001. Nancy Cedex, France |
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| Abstract: | The turbulence behavior of gas-liquid two-phase flow plays an important role in heat transfer and mass transfer in many chemical processes. In this work, a 2D particle image velocimetry (PIV) was used to investigate the turbulent characteristic of fluid induced by a chain of bubbles rising in Newtonian and non-Newtonian fluids. The instantaneous flow field, turbulent kinetic energy (TKE) and TKE dissipation rate were measured. The results demonstrated that the TKE profiles were almost symmetrical along the column center and showed higher values in the central region of the column. The TKE was enhanced with the increase of gas flow and decrease of liquid viscosity. The maximum TKE dissipation rate appeared on both sides of the bubble chain, and increased with the increase of gas flow rate or liquid viscosity. These results provide an understanding for gas-liquid mass transfer in non-Newtonian fluids. |
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