Study on the flow characteristics and mixing performance of multi-blade combined agitator

XU Yan; WANG Jian; WU Yongjun; LUO Peicheng

doi:10.11949/0438-1157.20200795

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Study on the flow characteristics and mixing performance of multi-blade combined agitator

Celebration Column for School of Chemistry and Chemical Engineering\, Nanjing University | 更新时间：2026-07-24

- Study on the flow characteristics and mixing performance of multi-blade combined agitator
- CIESC Journal Vol. 71, Issue 11, Pages: 4964-4970(2020)
- 作者机构：
  
  1.东南大学化学化工学院，江苏南京 211189
  2.北京系统工程研究所，北京 100034
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200795
  CLC： TQ 028.8
- Received：22 June 2020，
  
  Revised：2020-09-20，
  
  Online First：03 November 2020，
  
  Published：05 November 2020
- 稿件说明：
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许言, 王健, 武永军, 骆培成. 多叶片组合式搅拌桨釜内流动特性和混合性能研究[J]. 化工学报, 2020, 71(11): 4964-4970

XU Yan, WANG Jian, WU Yongjun, LUO Peicheng. Study on the flow characteristics and mixing performance of multi-blade combined agitator[J]. CIESC Journal, 2020, 71(11): 4964-4970
许言, 王健, 武永军, 骆培成. 多叶片组合式搅拌桨釜内流动特性和混合性能研究[J]. 化工学报, 2020, 71(11): 4964-4970 DOI： 10.11949/0438-1157.20200795.

XU Yan, WANG Jian, WU Yongjun, LUO Peicheng. Study on the flow characteristics and mixing performance of multi-blade combined agitator[J]. CIESC Journal, 2020, 71(11): 4964-4970 DOI： 10.11949/0438-1157.20200795.

摘要

开发可适用于较宽黏度范围的搅拌桨，强化釜内的流体流动和混合过程对于搅拌釜的节能增效具有重要的意义。实验与数值模拟相结合，在大涡模拟层面研究了多叶片组合式搅拌桨（MBC桨）从层流到湍流状态下，釜内的功率特性、流场分布、湍流特性和混合性能。结果表明：预测的功率曲线与实验结果一致；层流状态下釜内以切向流动为主，随着Reynolds数（

）的增大，釜内轴向和径向流动逐渐增强，当

达到486时，速度场分布与湍流状态下基本一致；在相同的能耗水平下，MBC桨对高黏度流体的混合性能优于商业Maxblend桨。桨叶的分散组合布置，强化了釜内的轴向和径向流动，使得MBC搅拌桨在从过渡流到湍流状态下均可实现较大的轴径向流动，湍动能分布较为均匀，混合过程显著加快。

Abstract

Developing an agitator suitable for wide viscosity range is of great significance to the energy saving and efficiency improvement by the intensification of fluid flow and mixing process. The power characteristics

flow field distribution

turbulence characteristics and mi

xing performance of multi-blade combined (MBC) agitator under laminar to turbulent flow state were studied experimentally and numerically at the level of large eddy simulation. The predicted power curve is consistent with the experimental results. Tangential flow is the main flow in laminar flow. With the increase of Reynolds number (

)

axial and radial flows in the vessel gradually increase. When

reaches 486

the velocity field distribution is basically the same as that in the turbulent flow. At the same energy consumption level

MBC agitator is superior to the commercial Maxblend agitator in mixing high viscosity fluid. The intensification of axial and radial flows is due to the dispersed arrangement of the blades

enabling the MBC agitator to achieve larger axial and radial flows from the transitional flow to the turbulence state. Moreover

the turbulent kinetic energy is evenly distributed and the mixing process is significantly accelerated.

关键词

Keywords

references

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