Characterization on the hydrodynamics of a covering-plate Rushton impeller

Tenglong Su; Fengling Yang; Meiting Li; Kanghui Wu

doi:10.1016/j.cjche.2017.11.015

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Characterization on the hydrodynamics of a covering-plate Rushton impeller

General reactor | Updated：2026-01-06

- Characterization on the hydrodynamics of a covering-plate Rushton impeller
- Characterization on the hydrodynamics of a covering-plate Rushton impeller
- 中国化学工程学报（英文版） 2018年第6期页码：1392-1400
- Affiliations：
  
  1. School of Mechanical Engineering, Shandong University,Jinan,China,250061
  2. 2 Key Laboratory of High Efficiency and Clean Mechanical Manufacture(Shandong University), Ministry of Education, Shandong University,Jinan,China,250061
- Author bio：
- Funds：
  
  Supported by the Key Development Foundation of Shandong province (2016GGX103035).
- DOI：10.1016/j.cjche.2017.11.015
  中图分类号：
- 纸质出版：2018
- Accepted：
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Tenglong Su, Fengling Yang, Meiting Li, 等. Characterization on the hydrodynamics of a covering-plate Rushton impeller[J]. 中国化学工程学报（英文版）, 2018,(6):1392-1400.

Tenglong Su, Fengling Yang, Meiting Li, et al. Characterization on the hydrodynamics of a covering-plate Rushton impeller[J]. Chinese Journal of Chemical Engineering, 2018, (6): 1392-1400.
Tenglong Su, Fengling Yang, Meiting Li, 等. Characterization on the hydrodynamics of a covering-plate Rushton impeller[J]. 中国化学工程学报（英文版）, 2018,(6):1392-1400. DOI： 10.1016/j.cjche.2017.11.015.

Tenglong Su, Fengling Yang, Meiting Li, et al. Characterization on the hydrodynamics of a covering-plate Rushton impeller[J]. Chinese Journal of Chemical Engineering, 2018, (6): 1392-1400. DOI： 10.1016/j.cjche.2017.11.015.

摘要

Abstract

A modified Rushton impeller with two circular covering-plates mounted on the upper and lower sides of the blades was designed. There are gaps between the plates and the blades. The turbulent hydrodynamics was analyzed by the computational fluid dynamics (CFD) method. Firstly

the reliability of the numerical model and simulation method was verified by comparing with the experimental results from literature. Subsequently

the power consumption

flow pattern

mean velocity and mixing time of the covering-plate Rushton impeller (RT-C) were studied and compared with the standard Rushton impeller (RT) operated under the same conditions. Results show that the power consumption can be decreased about 18%. Compared with the almost unchanged flow field in the lower stirred tank

the mean velocity was increased at the upper half of the stirred tank. And in the impeller region

the mean axial and radial velocities were increased

the mean tangential velocity was decreased. In addition

the average mixing time of RT-C was shortened about 4.14% than the counterpart of RT. The conclusions obtained here indicated that RT-C has a more effective mixing performance and it can be used as an alternative of RT in the process industries.

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