CFD simulation of flow and mixing characteristics in a stirred tank agitated by improved disc turbines

Zhuotai Jia; Lele Xu; Xiaoxia Duan; Zai-Sha Mao; Qinghua Zhang; Chao Yang

doi:10.1016/j.cjche.2022.05.017

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CFD simulation of flow and mixing characteristics in a stirred tank agitated by improved disc turbines

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- CFD simulation of flow and mixing characteristics in a stirred tank agitated by improved disc turbines
- Chinese Journal of Chemical Engineering Vol. 50, Issue 10, Pages: 95-107(2022)
- Affiliations：
  
  1. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences,Beijing,China,100190
  2. School of Chemical Engineering, University of Chinese Academy of Sciences,Beijing,China,100049
  3. School of Chemical Engineering, Nanjing Tech University,Nanjing,China,211816
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2022.05.017
  CLC：
- Published：2022
- Accepted：
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Zhuotai Jia, Lele Xu, Xiaoxia Duan, Zai-Sha Mao, Qinghua Zhang, Chao Yang. CFD simulation of flow and mixing characteristics in a stirred tank agitated by improved disc turbines[J]. Chinese Journal of Chemical Engineering, 2022, 50(10): 95-107.
DOI：

Zhuotai Jia, Lele Xu, Xiaoxia Duan, Zai-Sha Mao, Qinghua Zhang, Chao Yang. CFD simulation of flow and mixing characteristics in a stirred tank agitated by improved disc turbines[J]. Chinese Journal of Chemical Engineering, 2022, 50(10): 95-107. DOI： 10.1016/j.cjche.2022.05.017.

摘要

Abstract

To reduce the power consumption and improve the mixing performance in stirred tanks

two improved disc turbines namely swept-back parabolic disc turbine (SPDT) and staggered fan-shaped parabolic disc turbine (SFPDT) are developed. After validation of computational fluid dynamics (CFD) model with experimental results

CFD simulations are carried out to study the flow pattern

mean velocity

power consumption

pumping capacity and mixing efficiency of the improved and traditional impellers in a dished-bottom tank under turbulent flow conditions. The results indicate that compared with the commonly used parabolic disc turbine (PDT)

the power number of proposed SPDT and SFPDT impellers is reduced by 43% and 12%

and the pumping efficiency is increased by 68% and 13%

respectively. Furthermore

under the same power consumption (0-700 W·m

-3

)

the mixing performance of both SPDT and SFPDT is also superior to that of Rushton turbine and PDT.

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