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Acoustics Australia

, Volume 47, Issue 1, pp 91–104 | Cite as

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

  • Jiangfeng Tu
  • Lin GanEmail author
  • Shaojie Ma
  • He Zhang
Review Paper
  • 128 Downloads

Abstract

Before cavitation occurs, the underwater vehicle’ noise is mainly composed of structural noise, mechanical noise, instrument noise, etc. The noise mainly radiate in multipole form. And the line and non-line spectrums coexist in the noise spectrum. Besides, it changes with the flow velocity and the environmental pressure. Once the cavitation occurs, there are obvious differences in the noise spectrum. In order to study the noise characteristics of underwater high-speed vehicle, a numerical model of LES/FW-H coupling is established based on VOF multiphase flow and Schnerr and Sauer cavitation model. Then, the numerical simulation and water tunnel experiments are carried out to obtain the noise characteristics of the vehicle on different working conditions. The source of the noise is analyzed. The influence of velocity, pressure and cavitation on the noise and the directivity of the noise are revealed. The results of this paper can provide some reference for the study of the noise characteristics of underwater high-speed vehicle. It is helpful to better grasp the related technology of underwater high-speed vehicle and provide some support for reducing the noise of the high-speed vehicle or its detection.

Keywords

Blunt body model Natural cavitation LES/FW-H coupling model Water tunnel experiment Pressure transmitter Pressure signal Influence factors of noise Noise radiation characteristics 

Notes

Acknowledgements

This work is supported by the National Natural Science Foundation of China Grant Nos 51275248 and 51605227. In particular, the authors acknowledge the support of the project on the computer sources and experiments.

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Copyright information

© Australian Acoustical Society 2019

Authors and Affiliations

  1. 1.School of Mechanical EngineeringNanjing University of Science and TechnologyNanjingChina

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