Torque and bending moment acting on a flexible shaft agitated by disk turbines in a gas-liquid stirred vessel

Yangyang Liang; Zhengming Gao; Dai'en Shi; Haotian Li; Yuyun Bao; Ziqi Cai

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Torque and bending moment acting on a flexible shaft agitated by disk turbines in a gas-liquid stirred vessel

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

- Torque and bending moment acting on a flexible shaft agitated by disk turbines in a gas-liquid stirred vessel
- Torque and bending moment acting on a flexible shaft agitated by disk turbines in a gas-liquid stirred vessel
- 中国化学工程学报（英文版） 2019年27卷第4期页码：781-793
- Affiliations：
  
  1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology,Beijing,China,100029
  2. Mechanical Engineering School, Yancheng Institute of Technology,Yancheng,China,224051
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2019
- Accepted：
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Yangyang Liang, Zhengming Gao, Dai'en Shi, 等. Torque and bending moment acting on a flexible shaft agitated by disk turbines in a gas-liquid stirred vessel[J]. 中国化学工程学报（英文版）, 2019,27(4):781-793.

Yangyang Liang, Zhengming Gao, Dai'en Shi, Haotian Li, Yuyun Bao, Ziqi Cai. Torque and bending moment acting on a flexible shaft agitated by disk turbines in a gas-liquid stirred vessel[J]. Chinese Journal of Chemical Engineering, 2019, 27(4): 781-793.
Yangyang Liang, Zhengming Gao, Dai'en Shi, 等. Torque and bending moment acting on a flexible shaft agitated by disk turbines in a gas-liquid stirred vessel[J]. 中国化学工程学报（英文版）, 2019,27(4):781-793. DOI：

Yangyang Liang, Zhengming Gao, Dai'en Shi, Haotian Li, Yuyun Bao, Ziqi Cai. Torque and bending moment acting on a flexible shaft agitated by disk turbines in a gas-liquid stirred vessel[J]. Chinese Journal of Chemical Engineering, 2019, 27(4): 781-793. DOI：

摘要

Abstract

The torque and bending moment acting on a flexible overhung shaft in a gas-liquid stirred vessel agitated by a Rushton turbine and three different curved-blade disk turbines (half circular blades disk turbine

half elliptical blades disk turbine

and parabolic blades disk turbine) were experimentally measured by a customized moment sensor. The results show that the amplitude distribution of torque can be fitted by a symmetric bimodal distribution for disk turbines

and generally the distribution is more dispersive as the blade curvature or the gas flow rate increases. The amplitude distribution of shaft bending moment can be fitted by an asymmetric Weibull distribution for disk turbines. The relative shaft bending moment manifests a "rising-falling-rising" trend over the gas flow number

which is a corporate contribution of the unstable gas-liquid flow around the impeller

the gas cavities behind the blades

and the direct impact of gas on the impeller. And the "falling" stage is greater and lasts wider over the gas flow number for Rushton turbine than for the curved-blade disk turbines.

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