Analysis of Centroid Trajectory Characteristics of Axial-Flow Pump Impeller Under Hydraulic Excitation

Frontiers in Energy Research

Fangpin Tang¹  Rentian Zhang²  Hao Xu³  Xiaohui Duan³  Qun Lu³  Jian Chen³  Wenyong Duan³ 

[1] College of Hydraulic Engineering, Yangzhou University, Yangzhou, China;Jiangsu Surveying and Design Institution of Water Resources Co., Ltd., Yangzhou, China;School of Electrical Engineering, Yancheng Institute of Technology, Yancheng, China;

关键词: hydraulic excitation;    axial flow pump;    pressure;    force;    displacement;   

DOI  :  10.3389/fenrg.2021.754419

来源: DOAJ

【 摘 要 】

The hydraulic excitation characteristics of axial flow pump unit are studied through theoretical analysis, numerical simulation and field test in this paper. The correlation between impeller hydraulic and radial vibration displacement of impeller centroid is obtained through theoretical analysis. Through the 1-way fluid-solid-interaction (FSI) numerical simulation, the distributions of water pressure and displacement on the impeller surface are obtained, and the time-domain and frequency-domain characteristics of transient hydraulic and radial displacement are revealed. Through the field test, the external characteristics of axial flow pump unit and the time-frequency characteristics of the pressure pulsation at the measuring points beside the inlet of the impeller are obtained. The comparisons between simulation results and experimental results show that the former is accurate and reliable.

【 授权许可】

Unknown