Study on the induced noise of gas–liquid two-phase flow in a centrifugal pump

He, Aixia; Shao, Changzheng

doi:10.1016/j.apacoust.2020.107892

Cited by 11 publications

(2 citation statements)

References 22 publications

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“…Overall, the noise is strongest at the edge of the blade inlet in the flow channel, and the flow noise in the draft tube is strongest in relation to the rotating flow. He [15] et al studied the flow characteristics and hydrodynamic noise characteristics inside the centrifugal pump in depth after simulation calculations and found that the radiation of hydrodynamic noise mainly originates from the pressure fluctuation of the inner wall of the pump. Xu [16] et al found through acoustic numerical simulations of axial flow pumps that the radiated noise of the axial flow pump exhibits dipole characteristics under the blade frequency in all flow conditions and the sound pressure level increases with the increase in the flow rate.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Analysis of the Correlation between Hydrodynamic Noise of Hydraulic Turbines and Defects in Runner Blades

Liu,

Yu,

Qian

et al. 2024

Water

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To investigate the hydrodynamic noise characterization of hydraulic turbines with runner blade defects, this article establishes the intact machine model and three kinds of models with runner blade defects. Using the Computational Fluid Dynamic (CFD) and Computational Acoustic (CA) hybrid simulation computational methods, the hydrodynamic noise field of the hydraulic turbine is numerically simulated, and the results of the acoustic near field and acoustic far field are shown. 1. The double-row leaf grille and the runner are the primary sound source areas of the hydraulic turbine, and the intensity of sound radiation from these areas is positively correlated with the degree of runner blade defects. 2. As the runner blade defects develop, the sound power level (SWL) increases more significantly in the guide vanes near the nose of the spiral case in the double-row leaf grille. The most pronounced increase in the SWL is observed at the defective craters on the runner blades. 3. The frequency of the defective noise signal is primarily concentrated in the low-frequency band. The dominant frequency amplitude associated with runner blade defects increases and rises after the occurrence of defects. Secondary frequency changes are also observed, and the location of these changes varies at different receiving points.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation Analysis of the Correlation between Hydrodynamic Noise of Hydraulic Turbines and Defects in Runner Blades

Liu,

Yu,

Qian

et al. 2024

Water

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show abstract

“…In addition, due to having moving parts, the maintenance cost of liquid cooling systems is relatively high, which makes them a more costly solution. Noise is another drawback when high pumping speed is needed [28]. Air-based cooling systems are noise-free and less complex than liquid cooling, making them a good candidate when the ambient temperature is not high [29].…”

Section: Introductionmentioning

confidence: 99%

A Novel Air-Cooled Thermal Management Approach towards High-Power Lithium-Ion Capacitor Module for Electric Vehicles

et al. 2021

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This work presents an active thermal management system (TMS) for building a safer module of lithium-ion capacitor (LiC) technology, in which 10 LiCs are connected in series. The proposed TMS is a forced air-cooled TMS (ACTMS) that uses four axial DC 12 V fans: two fans are responsible for blowing the air from the environment into the container while two other fans suck the air from the container to the environment. An experimental investigation is conducted to study the thermal behavior of the module, and numerical simulations are carried out to be validated against the experiments. The main aim of the model development is the optimization of the proposed design. Therefore, the ACTMS has been optimized by investigating the impact of inlet air velocity, inlet and outlet positions, module rotation by 90° towards the airflow direction, gap spacing between neighboring cells, and uneven gap spacing between neighboring cells. The 3D thermal model is accurate, so the validation error between the simulation and experimental results is less than 1%. It is proven that the ACTMS is an excellent solution to keep the temperature of the LiC module in the desired range by air inlet velocity of 3 m/s when all the fans are blowing the air from both sides, the outlet is designed on top of the module, the module is rotated, and uneven gap space between neighboring cells is set to 2 mm for the first distance between the cells (d1) and 3 mm for the second distance (d2).

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Investigation on the influence of number of blades on flow-induced noise optimization design of a centrifugal pump

Guo

Lv²,

Gao³

et al. 2022

J Mech Sci Technol

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Study on the induced noise of gas–liquid two-phase flow in a centrifugal pump

Cited by 11 publications

References 22 publications

Numerical Simulation Analysis of the Correlation between Hydrodynamic Noise of Hydraulic Turbines and Defects in Runner Blades

Numerical Simulation Analysis of the Correlation between Hydrodynamic Noise of Hydraulic Turbines and Defects in Runner Blades

A Novel Air-Cooled Thermal Management Approach towards High-Power Lithium-Ion Capacitor Module for Electric Vehicles

Investigation on the influence of number of blades on flow-induced noise optimization design of a centrifugal pump

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