An investigation on the effects of various flow parameters on the underwater flow noise

Sertac Bulut, Selma Ergin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

The prediction and reduction of underwater noise is commercially, militarily and ecologically a very critical issue for maritime industry. Machine noise, propeller noise and flow noise are the main components of underwater noise for submerged bodies. Especially at high flow velocities, flow noise becomes dominant source of underwater noise radiated from these bodies. In this paper, the effects of the fluid temperature and salinity of the fluid on the underwater flow noise are investigated, numerically. A circular cylinder is selected for the validation studies of the noise model used in the acoustic analyses. The flow characteristics are obtained by solving governing equations of fluid using Computational Fluid Dynamics (CFD). The turbulence is modelled by using SST k- turbulence model. The Ffowcs Williams and Hawkings (FW-H) noise model is applied to predict the sound pressure levels at the receiver points defined various locations, numerically. The monopole, dipole and quadrupole sound sources are taken into consideration for acoustic analyses.

Original languageEnglish
Title of host publicationTechnology and Science for the Ships of the Future - Proceedings of NAV 2018
Subtitle of host publication19th International Conference on Ship and Maritime Research
EditorsAlberto Marino, Vittorio Bucci
PublisherIOS Press
Pages133-140
Number of pages8
ISBN (Electronic)9781614998693
DOIs
Publication statusPublished - 1 Jan 2018
Event19th International Conference on Ship and Maritime Research, NAV 2018 - Trieste, Italy
Duration: 20 Jun 201822 Jun 2018

Publication series

NameTechnology and Science for the Ships of the Future - Proceedings of NAV 2018: 19th International Conference on Ship and Maritime Research

Conference

Conference19th International Conference on Ship and Maritime Research, NAV 2018
Country/TerritoryItaly
CityTrieste
Period20/06/1822/06/18

Bibliographical note

Publisher Copyright:
© 2018 The authors and IOS Press. All rights reserved.

Keywords

  • Computational Acoustics
  • FW-H
  • Sound sources
  • Underwater Flow Noise

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