Flow Noise Characteristics Analysis of Underwater High-Speed Vehicle Based on LES/FW-H Coupling Model

Jiangfeng, Tu; Gan, Lin; Ma, Shaojie; He, Z. Y.

doi:10.1007/s40857-018-00148-9

Cited by 18 publications

(7 citation statements)

References 19 publications

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“…With the development of the computer performance, both the calculation accuracy and speed have improved significantly. Computational Fluid Dynamics (CFD) is currently the most efficient method for analyzing the flow and flow-induced noise [49][50][51][52]. It is worh noting that the empirical model and assumption are used in the simulation process, so the experimental validation is essential.…”

Section: Numerical Simulation Studymentioning

confidence: 99%

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

Guo

Gao

2020

Applied Sciences

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Flow-induced noise is a significant concern for the design and operation of centrifugal pumps. The negative impacts of flow-induced noise on operating stability, human health and the environment have been shown in many cases. This paper presents a comprehensive review of the flow-induced noise study for centrifugal pumps to synthesize the current study status. First, the generation mechanism and propagation route of flow-induced noise are discussed. Then, three kinds of study methodologies, including the theoretical study of hydrodynamic noise, numerical simulation and experimental measurement study, are summarized. Subsequently, the application of the three study methodologies to the analysis of the distribution characteristics of flow-induced noise is analyzed from aspects of the noise source identification and comparison, the frequency response analysis, the directivity characteristics of sound field and the noise changing characteristics under various operating conditions. After that, the analysis of the noise optimization design of centrifugal pumps is summarized. Finally, based on previous study results, this paper puts forward the unsolved problems and implications for future study. In conclusion, the information collected in this review paper could guide further study of the flow-induced noise of centrifugal pumps.

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Section: Numerical Simulation Studymentioning

confidence: 99%

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

Guo

Gao

2020

Applied Sciences

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“…Noise caused by underwater vehicles primarily includes mechanical noise generated by the vibration of mechanical structures and hydrodynamic noise generated by water flow radiation. In the case of no cavitation bubble in the flow field, the higher the sailing speed and the deeper the sailing depth, the higher the noise amplitude [13]. Nevertheless, through the occurrence of cavitation, the cavitation bubble cluster becomes the main source of hydrodynamic noise.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Investigation of Supercavitation Vehicle’s Hydrodynamic Noise

Ye,

Zhang,

Wang

et al. 2023

JMSE

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This paper presents the simulation results of the acoustic field around an underwater supercavitation vehicle under various operating conditions and analyzes the cavitation phenomenon and the hydrodynamic noise spectrum. Regarding the ventilated cavitation phenomenon, the simulation shows that low vehicle speed can reduce the threshold of the ventilated supercavitation, and high background pressure can enhance the stability of the supercavitation structure. As for hydrodynamic noise, firstly, the simulation results reveal that when cavitation occurs, the noise spectrum exhibits several characteristic peaks near 1 kHz and between 3 and 10 kHz. The overall noise amplitude demonstrates a descending trend between 10 and 40 kHz. Further, under natural cavitation conditions, a characteristic peak is detectable between 40 and 80 kHz. The influence of the operating conditions on the noise is essentially achieved by altering the scale of the cavitation flow: with the growth of the bubble flow scale, the noise between 3 and 10 kHz first increases and then decreases due to its own pulsation and the masking effect, while the noise between 10 to 40 kHz substantially reduces. On the other hand, if the scale expansion of bubble flow is related to the increase of ventilation flow, the noise amplitude near 1 kHz will increase significantly. These results provide theoretical support for studying the supercavitation vehicles’ noise and applying the ventilated supercavitation technology.

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“…Li et al proposed a numerical simulation method that comprehensively considered dipole and quadrupole sources to predict aerodynamic noise [14]. Tu et al based on VOF multiphase flow and Schnerr-Sauer cavitation model, established LES/FW-H coupling model to study the noise characteristics of underwater high-speed vehicle [15]. Yang et al established a onedimensional computational fluid dynamics model integrating the intake/exhaust system and the engine based on a vehicle with an in-line four-cylinder engine, and predicted the intake noise [16].…”

Section: Introductionmentioning

confidence: 99%

Structural Design and Parameter Optimization of Bionic Exhaust Tailpipe of Tractors

et al. 2022

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The exhaust tailpipe of a certain type of tractor was improved from the perspective of bionics, and bionic triangular convex texture was added to the inner surface of the exhaust tailpipe. The bionic tailpipe was proposed to improve noise reduction performance without changing the overall size parameters of the prototype tailpipe. Acoustics simulation software was used to predict the aeroacoustics noise and transmission loss of the exhaust tailpipe. Bionic exhaust tailpipes with triangular textures of different numbers of circumferential columns, height, and top angles were analyzed to study the noise reduction performance. The results showed that the proposed bionic exhaust tailpipes with triangular convex textures reduced the total sound pressure level and improved the transmission loss of the prototype exhaust tailpipe. To increase the transmission loss, a genetic algorithms (GA) optimized back-propagation neural network (BP) was used to optimize the bionic triangular convex texture parameters. By studying the aerodynamic noise reduction mechanism of bionic tailpipes, the research suggested that a secondary vortex appeared near the bionic texture and reduced aerodynamic drag and aeroacoustics noise. In addition, the sound pressure level amplitude nephogram, velocity vector nephogram, and velocity amplitude nephogram of the exhaust tailpipes were analyzed to study the vibration noise reduction mechanism of the bionic tailpipes. Then, the noise reduction performance was experimentally evaluated. The experimental results of the bionics exhaust tailpipes with triangular convex textures were analyzed and compared to that of the prototype tailpipe. The results demonstrated that the bionic exhaust tailpipes were able to attenuate noise.

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Flow Noise Characteristics Analysis of Underwater High-Speed Vehicle Based on LES/FW-H Coupling Model

Cited by 18 publications

References 19 publications

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

A Numerical Investigation of Supercavitation Vehicle’s Hydrodynamic Noise

Structural Design and Parameter Optimization of Bionic Exhaust Tailpipe of Tractors

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