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Optimization of the Structural Parameters of a Plastic Centrifugal Pump in the Framework of a Flow Field Analysis

Wenbin Luo1,*, Youmin Wang1, Yuting Yan2, Yifang Shi1, Zhendong Zhang3
1 School of Mechanical Engineering, Anhui Polytechnic University, Wuhu, 241000, China
2 Hohai University, Nanjing, 210098, China
3 Anhui Institute of Information Technology, Wuhu, 241199, China
* Corresponding Author: Wenbin Luo. Email:
(This article belongs to this Special Issue: Materials, Energy, and Fluid Dynamics)

Fluid Dynamics & Materials Processing 2022, 18(3), 789-813.

Received 08 October 2021; Accepted 28 December 2021; Issue published 22 February 2022


In order to determine the optimal structural parameters of a plastic centrifugal pump in the framework of an orthogonal-experiment approach, a numerical study of the related flow field has been performed using CFX. The thickness S, outlet angle β2, inlet angle β1, wrap angle, and inlet diameter D1 of the splitter blades have been considered as the variable factors, using the shaft power and efficiency of the pump as evaluation indices. Through a parametric analysis, the relative importance of the influence of each structural parameter on each evaluation index has been obtained, leading to the following combinations: β1 19°, β2 35°, S 2 mm, wrap angle 154°, and D1 85 mm (corresponding to the maximum efficiency of 75.48%); β1 19°, β2 20°, S 6 mm, wrap angle 158°, and D1 81 mm (corresponding to the minimum shaft power of 75.48%). Moreover, the grey correlation method has been applied to re-optimize the shaft power and efficiency of the pump, leading to the following optimal combination: β1 19°, β2 15°, S 4 mm, D1 81 mm, and wrap angle 152° (corresponding to the maximum efficiency of 71.81% and minimum shaft power of 2.187 kW).


Plastic centrifugal pump; splitter blade; orthogonal experiment; grey correlation method; optimal combination

Cite This Article

Luo, W., Wang, Y., Yan, Y., Shi, Y., Zhang, Z. (2022). Optimization of the Structural Parameters of a Plastic Centrifugal Pump in the Framework of a Flow Field Analysis. FDMP-Fluid Dynamics & Materials Processing, 18(3), 789–813.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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