| 大涡模拟搅拌槽中的液相流动 |
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| 引用本文： | 张艳红,杨超,毛在砂.大涡模拟搅拌槽中的液相流动[J].化工学报,2007,58(10):2474-2479. |
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| 作者姓名： | 张艳红 杨超 毛在砂 |
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| 作者单位： | 中国科学院过程工程研究所 中国科学院过程工程研究所 中科院过程工程所 |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划) |
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| 摘 要： | 采采用大涡模拟湍流模型对有档板的Rushton 桨搅拌槽进行了数值模拟研究。控制方程采用控制容积法进行离散，对流项用三阶QUICK格式，扩散项是二阶中心差分。压力 速度耦合方程在交错网格上采用SIMPLE算法进行求解。小尺度流动的模化采用动力学（dynamic）亚格子模型。搅拌桨与档板之间的相互作用采用改进的内外迭代法进行处理。计算结果和文献值吻合得很好。
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| 关 键 词： | 大涡模拟 搅拌槽 动力学亚格子模型 计算流体力学 大涡模拟 搅拌槽 液相流动 stirred tank turbulent flow simulation eddy 文献 结果 计算 处理 内外迭代法 改进 相互作用 搅拌桨 亚格子模型 dynamic 动力学 模化 小尺度 |
| 文章编号： | 0438-1157（2007）10-2474-06 |
| 收稿时间： | 2006-12-8 |
| 修稿时间： | 2006-12-08 |
Large eddy simulation of turbulent flow in a stirred tank |
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| ZHANG Yanhong,YANG Chao,MAO Zaisha.Large eddy simulation of turbulent flow in a stirred tank[J].Journal of Chemical Industry and Engineering(China),2007,58(10):2474-2479. |
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| Authors: | ZHANG Yanhong YANG Chao MAO Zaisha |
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| Affiliation: | lnstitute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | The turbulent flow field generated in a baffled stirred tank with a Rushton turbine was computed by large eddy simulation(LES).The dynamic subgrid model was used to model the unresolved scales.The spatial discretization of the governing equations was performed on a cylindrical staggered grid.The momentum and continuity equations were discretized by the finite difference method with a third order QUICK scheme for the convective terms.The interaction between rotating impeller and static baffles was accounted for through the improved inner-outer iterative algorithm.The phase-resolved predictions were compared with the experimental data of references and good agreement was observed both for mean resolved fields and turbulence quantities. |
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| Keywords: | large eddy simulation stirred tank dynamic subgrid-scale model computational fluid dynamics(CFD) |
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