Use of acoustic analogy for marine propeller noise characterisation
Use of acoustic analogy for marine propeller noise characterisation
Being able to predict shipborne noise is of significant importance to international maritime community. Porous Ffowcs-Williams Hawkings acoustic analogy is used with cavitation model by Sauer & Schnerr in order to predict the noise signature of the Potsdam Propeller operating in open water. The radiation pattern is shown to be predominantly affected by a dipole source, in addition to less prominent sources at the propeller plane and in the wake. It is shown that the predicted sound pressure levels depend on the choice of the control surface and grid density. The unsteady RANS method is shown to be capable of capturing the blade harmonic noise components but lacks the ability to deal with the broadband part of the noise spectrum, both cavitation and turbulence induced, if no additional modelling is used.
cavitation, noise, hydroacoustics, acoustic analogy
Lidtke, Artur Konrad
5570c46b-09b5-4345-9f5c-7a5ed2a29ffc
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Humphrey, Victor
23c9bd0c-7870-428f-b0dd-5ff158d22590
June 2015
Lidtke, Artur Konrad
5570c46b-09b5-4345-9f5c-7a5ed2a29ffc
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Humphrey, Victor
23c9bd0c-7870-428f-b0dd-5ff158d22590
Lidtke, Artur Konrad, Turnock, Stephen and Humphrey, Victor
(2015)
Use of acoustic analogy for marine propeller noise characterisation.
Fourth International Symposium on Marine Propulsors SMP’15, Austin, Texas, United States.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Being able to predict shipborne noise is of significant importance to international maritime community. Porous Ffowcs-Williams Hawkings acoustic analogy is used with cavitation model by Sauer & Schnerr in order to predict the noise signature of the Potsdam Propeller operating in open water. The radiation pattern is shown to be predominantly affected by a dipole source, in addition to less prominent sources at the propeller plane and in the wake. It is shown that the predicted sound pressure levels depend on the choice of the control surface and grid density. The unsteady RANS method is shown to be capable of capturing the blade harmonic noise components but lacks the ability to deal with the broadband part of the noise spectrum, both cavitation and turbulence induced, if no additional modelling is used.
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2015 Lidtke A K - Use of Acoustic Analogy for Marine Propeller Noise Characterisation.pdf
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Published date: June 2015
Venue - Dates:
Fourth International Symposium on Marine Propulsors SMP’15, Austin, Texas, United States, 2015-06-04
Keywords:
cavitation, noise, hydroacoustics, acoustic analogy
Organisations:
Fluid Structure Interactions Group, Faculty of Engineering and the Environment
Identifiers
Local EPrints ID: 386511
URI: http://eprints.soton.ac.uk/id/eprint/386511
PURE UUID: a5dde295-e06d-4880-8884-cc5ba7d5ab07
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Date deposited: 08 Feb 2016 11:26
Last modified: 15 Mar 2024 03:17
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