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Open AccessArticle

Impeller Optimized Design of the Centrifugal Pump: A Numerical and Experimental Investigation

by 1,2,3, 1,2,3,4,*, 1,2,3 and 5
1
Key Laboratory of Hydraulic Machinery Transients, Ministry of Education, Wuhan University, Wuhan 430072, China
2
Hubei Key Laboratory of Waterjet Theory and New Technology, Wuhan University, Wuhan 430072, China
3
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
4
Collaborative Innovation Center of Geospatial Technology, Wuhan 430079, China
5
School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
*
Author to whom correspondence should be addressed.
Energies 2018, 11(6), 1444; https://doi.org/10.3390/en11061444
Received: 22 March 2018 / Revised: 8 May 2018 / Accepted: 17 May 2018 / Published: 4 June 2018
(This article belongs to the Special Issue Engineering Fluid Dynamics 2018)
Combined numerical simulation with experiment, blade wrap angle, and blade exit angle are varied to investigate the optimized design of the impeller of centrifugal pump. Blade wrap angles are 122°, 126°, and 130°. Blade exit angles are 24°, 26°, and 28°. Based on numerical simulation, internal flow of the centrifugal pump with five different impellers under 0.6, 0.8, 1.0, 1.2, and 1.5 Qd are simulated. Variations of static pressure, relative velocity, streamline, and turbulent kinetic energy are analyzed. The impeller with blade wrap angle 126° and blade exit angle 24° are optimal. Distribution of static pressure is the most uniform and relative velocity sudden changes do not exist. Streamlines are the smoothest. Distribution scope of turbulent kinetic energy is the smallest. Based on performance experiments, head and efficiency of the centrifugal pump with the best impeller are tested. The values of head and efficiency are higher than that of the original pump. Centrifugal pump with the best impeller has better hydraulic performance than the original centrifugal pump. View Full-Text
Keywords: centrifugal pump; impeller; blade wrap angle; blade exit angle; optimized design centrifugal pump; impeller; blade wrap angle; blade exit angle; optimized design
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MDPI and ACS Style

Han, X.; Kang, Y.; Li, D.; Zhao, W. Impeller Optimized Design of the Centrifugal Pump: A Numerical and Experimental Investigation. Energies 2018, 11, 1444.

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