固-液搅拌槽内槽底流场的CFD模拟

王振松;李良超;黄雄斌*

北京化工大学学报(自然科学版) ›› 2005, Vol. 32 ›› Issue (4) : 5-9.

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北京化工大学学报(自然科学版) ›› 2005, Vol. 32 ›› Issue (4) : 5-9.
研究论文

固-液搅拌槽内槽底流场的CFD模拟

  • 王振松;李良超;黄雄斌*
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CFD modeling of liquid velocity in solid-liquid stirred tanks

  • WANG Zhen-song;LI Liang-chao;HUANG Xiong-bin*

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摘要

使用计算流体力学CFD软件CFX-5.5.1对搅拌槽内固液流场进行了数值模拟。搅拌槽直径T=476mm, 槽内均布四块挡板,搅拌桨为CBYⅢ桨。两相物系采用玻璃珠-水体系,固体体积分数Фv为5.4%。文中使用标准κ-ε模型计算了清水与固液两相的流场,考察了槽内的流场的分布对固体颗粒悬浮状况的影响,同时把槽底的清水和Фv为5.4%的固液两相模拟结果与实验结果进行了对比,模拟结果与实验较吻合。

Abstract

For the scale-up of solid-liquid stirred tanks, it is important to study the velocity distribution for both liquid and solid in a stirred tank. In this paper the liquid velocity in solid-liquid stirred tanks was predicated using Computational Fluid Dynamics(CFD) and validated by the experimental data obtained from the literature. The predication was carried out in a fully baffled, flat bottom vessel, with 476mm diameter, equipped with CBYIII impeller. The multiphase flow was modeled using the κ-ε model. The CFD predication of the velocity distribution in the bottom of the stirred tank is in good agreement with the experimental data.

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王振松;李良超;黄雄斌*. 固-液搅拌槽内槽底流场的CFD模拟[J]. 北京化工大学学报(自然科学版), 2005, 32(4): 5-9

WANG Zhen-song;LI Liang-chao;HUANG Xiong-bin*

.
CFD modeling of liquid velocity in solid-liquid stirred tanks[J]. Journal of Beijing University of Chemical Technology, 2005, 32(4): 5-9

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