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Prediction of the hydroacoustic emissions of a twin-screw vessel considering the phase angle of the propellers
Citation Link: https://doi.org/10.15480/882.9325
Publikationstyp
Conference Paper
Date Issued
2024-04-04
Sprache
English
TORE-DOI
Start Page
701
End Page
708
Citation
8th International Symposium on Marine Propulsors (smp 2024)
Contribution to Conference
Publisher
Norwegian University of Science and Technology, Department of Marine Technology
ISBN
978-82-691120-5-4
Peer Reviewed
true
The propulsion system radiates a substantial fraction of the total sound energy, especially if sheet or vortex cavitation occurs. In this paper, a boundary element method is applied to investigate the sound propagation into the far field of a twin-screw vessel. It focuses on the effect of phase angle between the propellers on the sound levels. The flow simulations are conducted using a first order panel method to model the flow around the after ship. In addition, the Ffowcs Williams-Hawkings equation is used to predict the sound propagated into the far field. Sound levels in the far field as well as at distinct observation points are evaluated to gain an understanding of the mechanism.
Subjects
Underwater radiated noise (URN)
boundary element method (BEM)
Ffowcs Williams-Hawkings method (FWH)
propeller cavitation
DDC Class
620: Engineering
Publication version
publishedVersion
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Name
Scharf-PredictionOfTheHydroacousticEmissionsOfATwinscrewVesselConsideri-1137-1-final.pdf
Type
Main Article
Size
10.12 MB
Format
Adobe PDF