Investigation on the flow and induced-noise mechanism during the transient start-up process of a mixed-flow pump

被引：0
|
作者：
Zhang, Jinsong [1 ]
Wang, Xinlong [1 ]
Yang, Chen [1 ]
Sun, Mingkang [1 ]
Huang, Zhenwei [1 ]
机构：
[1] Tsinghua Univ, Dept Energy & Power Engn, Beijing, Peoples R China
来源：
ENGINEERING COMPUTATIONS | 2024年 / 41卷 / 03期
关键词：
Transient start-up process; Hydro power; Flow-induced noise; Ocean energy; CENTRIFUGAL PUMP; NUMERICAL-SIMULATION; TURBINE; FIELD; GENERATION; VIBRATION; IMPELLER;
D O I：
10.1108/EC-08-2023-0448
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
PurposeThis study aims to investigate the noise-inducing characteristics during the start-up process of a mixed-flow pump and the impact of different start-up schemes on pump noise.Design/methodology/approachThis study conducted numerical simulations on the mixed-flow pump under different start-up schemes and investigated the flow characteristics and noise distribution under these schemes.FindingsThe results reveal that the dipole noise is mainly caused by pressure fluctuations, while the quadrupole noise is mainly generated by the generation, development and breakdown of vortices. Additionally, the noise evolution characteristics during the start-up process of the mixed-flow pump can be divided into the initial stage, stable growth stage, impulse stage and stable operation stage.Originality/valueThe findings of this study can provide a theoretical basis for the selection of start-up schemes for mixed-flow pumps, reducing flow noise and improving the operational stability of mixed-flow pumps.
引用
收藏
页码：727 / 754
页数：28
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