Show simple item record

dc.contributor.authorWilkes, Daniel
dc.contributor.authorAlexander, P.
dc.contributor.authorDuncan, Alexander
dc.contributor.editorTerrance McMinn
dc.date.accessioned2017-01-30T13:37:53Z
dc.date.available2017-01-30T13:37:53Z
dc.date.created2013-03-27T20:00:55Z
dc.date.issued2012
dc.identifier.citationWilkes, Daniel and Alexander, Polly and Duncan, Alec. 2012. FMBEM analysis of sound scattering from a damping plate in the near field of a hydrophone, in McMinn, Terrance (ed), Acoustics 2012 Fremantle: Acoustics, Development and the Environment, The 2012 Conference of the Australian Acoustical Society, Nov 21-23 2012. Fremantle, Western Australia: Australian Acoustical Society
dc.identifier.urihttp://hdl.handle.net/20.500.11937/33561
dc.description.abstract

As part of research into the effect of underwater noise on the communication between an under-ice Autonomous Underwater Vehicle (AUV) and it’s stationary launch vessel (the Aurora Australis), fast multipole boundary element method (FMBEM) acoustic modeling was conducted. In particular, a steel damping plate with a complex 3-dimensional structure was modeled (using up to 1.6 x 10 5 boundary elements) and the effect of sound scattering from a pinger near the ship was determined at the receiver hydrophone, which was in close proximity to the damping plate. The direct incident field from the pinger was modeled as a plane wave at a number of incidence angles (to account for the depths to which the hydrophone was lowered) and over a range of frequencies up to the pinger frequency of 10kHz. This paper presents these results and discusses some of the interesting effects observed at the ‘non-unique’ frequencies when using the different methods available to provide stability to the numerical solution. Thus far, the modeling conducted for the damping plate has treated the object as rigid. The FMBEM code being developed at CMST now has the capability to model fully coupled fluid-structure interactions and some initial results from treating the damping plate as elastic are also presented.

dc.publisherAcoustical Society of Australia
dc.relation.urihttp://www.acoustics.asn.au/conference_proceedings/AAS2012/papers/p70.pdf
dc.subjectcommunication
dc.subjectunderwater
dc.subjectunder-ice
dc.subjectAUV
dc.subjectnoise
dc.titleFMBEM analysis of sound scattering from a damping plate in the near field of a hydrophone.
dc.typeConference Paper
dcterms.source.titleProceedings of the Acoustical Society of Australia
dcterms.source.seriesProceedings of the Acoustical Society of Australia
dcterms.source.isbn9780646590394
dcterms.source.conferenceAcoustics 2012 Fremantle: Acoustics, Development and the Environment, the 2012 Conference of the Australian Acoustical Society
dcterms.source.conference-start-dateNov 21 2012
dcterms.source.conferencelocationFremantle, Western Australia
dcterms.source.placeAustralia
curtin.department
curtin.accessStatusOpen access


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record