穿流-刚柔组合桨强化固液两相的悬浮行为

谷德银; 刘作华; 邱发成; 许传林; 谢昭明; 李军; 陶长元; 王运东

doi:10.11949/j.issn.0438-1157.20170632

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穿流-刚柔组合桨强化固液两相的悬浮行为

流体力学与传递现象 | 更新时间：2025-12-10

- 穿流-刚柔组合桨强化固液两相的悬浮行为
- Solid-liquid suspension behavior intensified by punched rigid-flexible impeller
- 化工学报 2017年第12期页码：4556-4564
- 作者机构：
  
  1. 重庆大学化学化工学院,重庆,400044
  2. 清华大学化学工程系,北京,100084
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170632
  中图分类号： Q027.2
- 网络首发：2017-12-05，
  
  纸质出版：2017-12-05
- 稿件说明：
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谷德银, 刘作华, 邱发成, 等. 穿流-刚柔组合桨强化固液两相的悬浮行为[J]. 化工学报, 2017,(12):4556-4564.

GU Deyin, LIU Zuohua, QIU Facheng, et al. Solid-liquid suspension behavior intensified by punched rigid-flexible impeller[J]. CIESC Journal, 2017, (12): 4556-4564.
谷德银, 刘作华, 邱发成, 等. 穿流-刚柔组合桨强化固液两相的悬浮行为[J]. 化工学报, 2017,(12):4556-4564. DOI： 10.11949/j.issn.0438-1157.20170632.

GU Deyin, LIU Zuohua, QIU Facheng, et al. Solid-liquid suspension behavior intensified by punched rigid-flexible impeller[J]. CIESC Journal, 2017, (12): 4556-4564. DOI： 10.11949/j.issn.0438-1157.20170632.

摘要

采用双向流固耦合计算方法对搅拌槽内刚性桨（RDT-PBDT）、刚性组合桨（R-RDT-PBDT）、刚柔组合桨（RF-RDT-PBDT）、穿流-刚性组合桨（PR-RDT-PBDT）以及穿流-刚柔组合桨（PRF-RDT-PBDT）体系中的固液两相悬浮特性和桨叶总变形量、等效应力进行了研究。结果表明，在相同功耗下，PRF-RDT-PBDT的最大变形量分别是RDT-PBDT、R-RDT-PBDT、RF-RDT-PBDT、PR-RDT-PBDT的1.984×106倍、1.247×103倍、1.169倍、1.041×103倍。PRF-RDT-PBDT的应力大于RDT-PBDT、R-RDT-PBDT、RF-RDT-PBDT的，比PR-RDT-PBDT的应力分布更均匀。PRF-RDT-PBDT体系的固体颗粒最大Uz/Utip值和最大ε/D2N3值分别比RDT-PBDT、R-RDT-PBDT、RF-RDT-PBDT和PR-RDT-PBDT体系提高了53.08%和80.84%，38.03%和28.42%，22.14%和20.16%，10.85%和5.725%。PRF-RDT-PBDT能够增大与流体之间的相互耦合作用，增大固体颗粒的轴向速度，提高体系的湍动能耗散率，减小搅拌槽底部固体颗粒的堆积程度，提高固体颗粒的悬浮程度。

Abstract

The total deformation and equivalent stress of impeller

and hydrodynamics of solid-liquid suspension process in a stirred tank with RDT-PBDT

R-RDT-PBDT

RF-RDT-PBDT

PR-RDT-PBDT and PRF-RDT-PBDT were investigated using bidirectional fluid-structure interaction (FSI) method. Results showed that

at the same power consumption

the total deformation of PRF-RDT-PBDT was 1.984×106

1.247×103

1.169

1.041×103 times of RDT-PBDT

R-RDT-PBDT

RF-RDT-PBDT and PR-RDT-PBDT

respectively. The equivalent stress of PRF-RDT-PBDT was larger than that of RDT-PBDT

R-RDT-PBDT and RF-RDT-PBDT

and was more homogeneous than that of PR-RDT-PBDT. The maximum Uz/Utip value of solid particle and maximum ε/D2N3 value in PRF-RDT-PBDT system were 53.08% and 80.84%

38.03% and 28.42%

22.14% and 20.16%

10.85% and 5.725%

which are higher compared with RDT-PBDT

R-RDT-PBDT

RF-RDT-PBDT

PR-RDT-PBDT

respectively. Therefore

PRF-RDT-PBDT can enhance mutual coupling effect with fluid

increase axial velocity of solid particles and turbulent energy dissipation rate

reduce the accumulation of solid particles at the bottom of stirring tank

and improve the solid-liquid mixing performance.

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