Numerical and Experimental Study on the Flow-Induced Noise Characteristics of High-Speed Centrifugal Pumps

Si, Qiaorui; Shen, Chunhao; He, Xiaoke; Li, Hao; Huang, Kaile; Yuan, Jianping

doi:10.3390/app10093105

Cited by 13 publications

(3 citation statements)

References 23 publications

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“…For the excitation force, Wei Dou (2013) proposed that the main exciting force of the impeller can be divided into constant force and pulse force, while the interference between the impeller and tongue generates the variable excitation force. Qiaorui Si (2020) found that the pressure fluctuation nearby the tongue position might cause the radiated noise.…”

Section: Hydraulic Excitationmentioning

confidence: 99%

Review of the Hydraulic and Structural Design of High-Speed Centrifugal Pumps

Yang

Jia²,

Zhu³

et al. 2022

Front. Energy Res.

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In recent years, much attention has been paid to the application of high-speed centrifugal pumps; still, the development of this pump faces several challenges. In order to obtain a more comprehensive understanding of the high-speed centrifugal pump, this paper reviewed the engineering application, technical challenges, and feasible solutions of this pump from the aspects of hydraulic design, including cavitation, hydraulic excitation, efficiency issue at an ultra-low specific speed, and the solution to these problems. The current state of the structural design of the high-speed centrifugal pump was briefly described in addition. For the faults in the existing high-speed centrifugal pump, some research studies on pump monitoring were presented. Finally, the status and shortcomings of the design of the pump were simply analyzed and summarized. It is hoped that this study can provide some references for the design and practical usage of high-speed centrifugal pumps.

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Section: Hydraulic Excitationmentioning

confidence: 99%

Review of the Hydraulic and Structural Design of High-Speed Centrifugal Pumps

Yang

Jia²,

Zhu³

et al. 2022

Front. Energy Res.

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“…Subsequently, more and more studies have pointed out that due to the strong pulsation area between the impeller and the flow conduit connected to the pump device [19], the flow conduit has become the main contributor to the noise at the radial measuring point, therefore, the shell or flow conduit connected to the pump device has become the focus of the study of the radial noise of the pump device. Si, QR et al [20,21] arranged sound pressure-level monitoring points on the surface of the volute of the centrifugal pump to study the characteristics of flow-induced noise in the high-speed centrifugal pump, and compared and analyzed the advantages and disadvantages of Acoustic Boundary Element Method and Acoustic Finite Element Method in application, the results showed that the Acoustic Finite Element Method has more advantages in predicting discrete noise, so it is more suitable for the study of broadband noise in the internal flow field. The sound pressure level near the volute tongue is the highest, the rotor stator interaction between the impeller and the volute is the main cause of flow induced noise, and the unstable flow intensifies the broadband component in the noise spectrum.…”

Section: Introductionmentioning

confidence: 98%

Influence of Rotation Speed on Flow Field and Hydraulic Noise in the Conduit of a Vertical Axial-Flow Pump under Low Flow Rate Condition

Yang

Jiang

Yuan³

et al. 2022

Machines

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The complex flow inside the axial-flow pump device will cause the problem of hydraulic noise; in order to explore the influence of the law of rotation speed on the internal flow characteristics and hydraulic noise of the axial-flow pump conduit, a combination of Computational Fluid Dynamics (CFD) and Computational Acoustics (CA) was used to numerically solve the flow field and internal sound field in the pump device. The results showed that the flow in the elbow inlet conduit was smooth at different rotation speeds, and there was no obvious unstable flow. The higher the rotation speed, the more disordered the flow pattern in the left half of the elbow, which intensifies the unstable flow in the straight outlet conduit. The impeller is the main sound source of the internal hydrodynamic noise of the vertical axial-flow pump device. When the sound source propagates upstream and downstream along the conduit, the Total Sound Source Intensity (TSSI) gradually decays with the increase of distance; the greater the rotation speed is, the faster the Total Sound Source Intensity (TSSI) decays. When the rotation speed was increased from 1450 r/min to 2200 r/min, the TSSI in the straight outlet conduit was attenuated by 8.9 dB, 13.9 dB, and 16.0 dB respectively, and the TSSI in the elbow inlet conduit was attenuated by 11.0 dB, 13.5 dB, and 25.9 dB respectively. The vortex structure in the conduit induces flow noise and delays the attenuation of TSSI in the propagation process; with the increase of rotation speed, this delay will be more obvious.

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“…Subsequently, research on the noise induced by gasliquid two-phase flow in the pump was conducted, and the noise mechanism caused by the gas-liquid two-phase flow in the pump was preliminarily elaborated. Wang et al (2017), Si et al (2020), Liu et al (2016), Gao et al (2017), and Dong et al (2018) studied the noise in centrifugal pumps under different operating conditions by performing experiments and numerical simulations. They analysed the effects of rotational speed, flow rate, cavitation (Rehman et al 2013;Jaiswal et al 2019Jaiswal et al , 2022, and backflow (Si et al 2013) on flow-induced noise in pumps.…”

Section: Introductionmentioning

confidence: 99%

Impact of Transient Gas Injection on Flow-Induced Noise in Centrifugal Pumps

2023

JAFM

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The influence of inlet gas volume fractions on flow-induced noise in centrifugal pumps during the transition process of gas injection and the generation mechanism of noise in this process was studied. To this end, numerical simulations of the flow and sound fields as well as visual experiments of the flow field were conducted. The variation laws of the flow field, frequency-domain sound field, and time-domain sound field during the process were investigated. The relationship between the pressure pulsation and flow-induced noise was analysed in detail. The results indicate that it is more reasonable to consider the outlet gas volume fraction as the judgement criterion for the end of the transition process. The axial and blade passing frequencies are characteristic discrete frequencies in this process. The pressure pulsation and sound pressure level at the blade passing frequency are stable in the early stage of the process. Subsequently, they decrease first and then increase in the middle stage and return to a stable state in the final stage. The variation laws of the two exhibit consistency, indicating that the pressure pulsation directly induces a change in the sound pressure level. Furthermore, the injection of gas can weaken the disturbance effect of the blade.

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Numerical and Experimental Study on the Flow-Induced Noise Characteristics of High-Speed Centrifugal Pumps

Cited by 13 publications

References 23 publications

Review of the Hydraulic and Structural Design of High-Speed Centrifugal Pumps

Review of the Hydraulic and Structural Design of High-Speed Centrifugal Pumps

Influence of Rotation Speed on Flow Field and Hydraulic Noise in the Conduit of a Vertical Axial-Flow Pump under Low Flow Rate Condition

Impact of Transient Gas Injection on Flow-Induced Noise in Centrifugal Pumps

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