Clocking Effect of Relative Position Matching on the Hydrodynamic and Flow-Induced Noise Characteristics in a Centrifugal Pump

作     者：Wei, Zhicong Zhu, Zuchao Li, Xiaojun Tao, Ran Xiao, Ruofu Hu, Honglin 

作者机构：Key Laboratory of Fluid Transmission Technology of Zhejiang Province Zhejiang Sci-Tech University 928 4th St Zhejiang Hangzhou310018 China College of Water Resources and Civil Engineering China Agricultural University 17 Tsinghua East Road Beijing100083 China Beijing Engineering Research Center of Safety and Energy Saving Technology for Water Supply Network System 17 Tsinghua East Road Beijing100083 China Nanjing Engineering Institute of Aircraft Systems Jincheng 33 Shui Ge Road Jiangsu Nanjing211106 China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration 33 Shui Ge Road Jiangsu Nanjing211106 China 

出 版 物：《SSRN》 

年 卷 期：2024年

核心收录：

主　　题：Noise abatement 

摘      要：This paper investigates the influence of clocking effect caused by the relative position matching(RPM) between the rotating and stationary blades in a single-stage centrifugal pump. The hydrodynamic performance and flowinduced noise characteristics under different PRM between the rotating and stationary blades are numerically studied and validated by experiments. The results indicates that the clocking effect caused by RPM can improve pump hydrodynamic performance and noise characteristics. A non-dimensional parameter describing the clocking effect caused by RPM is proposed, which absolute value shows a significant negative correlation with the pump head and sound pressure. The variation of hydrodynamic performance and noise characteristics among the different Ce are compared, suggesting that the Ce is not the only factor and is also affected by the blade tilt angle. The analysis of the flow field indicates that the clocking effect primarily enhances noise reduction by improving the transmission characteristics of pressure fluctuation, and then improves the unsteady surface pressure distribution on the wall of the volute. The above results demonstrate that it is able to achieve the effect of increasing the head and reducing the noise by adjusting the RPM. © 2024, The Authors. All rights reserved.