A coupled modelling approach for the fast computation of underwater noise radiation from offshore pile driving

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Abstract

This paper presents a computationally efficient modelling approach for the prediction of underwater noise radiation from offshore pile driving. A near-source module is adopted to capture the interaction between the pile, fluid and soil, which is based on a previously developed semi-analytical vibro-acoustic model. This module primarily aims at modelling the sound generation and propagation in the vicinity of the monopile. The Green's tensor for an axisymmetric ring source in a horizontally stratified acousto-elastic half-space emitting both compressional and shear waves is derived using the normal modes and branch line integrations. The boundary integral equations are then formulated based on the reciprocity theorem, which forms the mathematical basis of the far-from-source module for the propagation of the wave field at large radial distances. The complete noise prediction model comprises the two modules, which are coupled through the boundary integral formulation with the input obtained from the near-source module. Model predictions are benchmarked against measurement data from an offshore installation campaign.

Original languageEnglish
Title of host publicationEURODYN 2020 XI International Conference on Structural Dynamics
Subtitle of host publicationAthens, Greece, 23–26 November 2020
EditorsM. Papadrakakis, M. Fragiadakis, C. Papadimitriou
PublisherEuropean Association for Structural Dynamics (EASD)
Pages2427-2436
Number of pages10
Volume2
ISBN (Electronic)9786188507210
DOIs
Publication statusPublished - 2020
EventEURODYN 2020: XI International Conference on Structural Dynamics - Athens, Greece
Duration: 23 Nov 201926 Nov 2020
https://eurodyn2020.org/

Publication series

NameEASD Procedia
ISSN (Print)2311-9020

Conference

ConferenceEURODYN 2020
CountryGreece
CityAthens
Period23/11/1926/11/20
Internet address

Keywords

  • Noise propagation
  • Offshore pile driving
  • Offshore wind
  • Underwater noise
  • Vibro-acoustics

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