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Predicting the Hydrodynamic Acoustic Signature of CFAV Quest in the Near Surface Environment

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dc.contributor.author Doyle, Robert
dc.date.accessioned 2012-10-05T15:12:32Z
dc.date.available 2012-10-05T15:12:32Z
dc.date.issued 2012-10-05
dc.identifier.uri http://hdl.handle.net/10222/15574
dc.description.abstract Three models for the generation and propagation of hydrodynamic noise near the ocean surface are presented, and are compared for their ability to predict hull noise generated by CFAV Quest. The simulated fluctuating pressure field on the hull is also validated against experimental results. The near field flow is first solved using the NWT CFD package, and the hydrodynamic noise is calculated using the Lighthill-Curle acoustic analogy. The far field sound is obtained using three methods: a method of images solution to the Lighthill-Curle equations, a simple source model of the transmission loss, or a normal mode model of the transmission loss. Both the simple source and method of images models improve the SPL predictions of the Lighthil-Curle equations. Best performance is obtained from the method of images, improving predictions by approximately 40 dB. The normal mode model is shown to give poor results, due to assumed sea-floor boundary conditions. en_US
dc.language.iso en en_US
dc.subject Computational Fluid Dynamics en_US
dc.subject Hydrodynamic Noise en_US
dc.subject Lloyd's Mirror en_US
dc.subject Method of Images en_US
dc.subject Computational Aeroacoustics en_US
dc.title Predicting the Hydrodynamic Acoustic Signature of CFAV Quest in the Near Surface Environment en_US
dc.date.defence 2012-09-21
dc.contributor.department Department of Mechanical Engineering en_US
dc.contributor.degree Master of Applied Science en_US
dc.contributor.external-examiner n/a en_US
dc.contributor.graduate-coordinator Dr Ya-Jun Pan en_US
dc.contributor.thesis-reader Dr Serguei Iakovlev en_US
dc.contributor.thesis-reader Dr Robert Bauer en_US
dc.contributor.thesis-supervisor Dr Julio Militzer, Dr Mae Seto en_US
dc.contributor.ethics-approval Not Applicable en_US
dc.contributor.manuscripts Not Applicable en_US
dc.contributor.copyright-release Not Applicable en_US

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