Directivity and sound power radiated by a source under a boundary layer
Directivity and sound power radiated by a source under a boundary layer
This paper considers the radiation of sound from compact 2D or 3D sources located in an
otherwise rigid wall, bounding a region of fluid flowing parallel to the wall. The sound
radiation problem is modeled using a wavenumber decomposition. Numerical results show
how the radiated power and directivity depend on the free-stream flow Mach number and
the thickness of the boundary layer adjacent to the wall. The numerical model is validated
by comparing the sound power and directivity obtained in the limiting case of a thin
boundary layer with that obtained from an alternative analytical model in which the flow is
uniform and there is slip at the boundary.
Smith, M.G.
1bc8608d-0178-4793-8f73-46a6c6b9b279
Morfey, C.L.
d5f9a8d0-7d8a-4915-a522-bf49dee111f2
2004
Smith, M.G.
1bc8608d-0178-4793-8f73-46a6c6b9b279
Morfey, C.L.
d5f9a8d0-7d8a-4915-a522-bf49dee111f2
Smith, M.G. and Morfey, C.L.
(2004)
Directivity and sound power radiated by a source under a boundary layer.
10th AIAA/CEAS Aeroacoustics Conference, Manchester, UK, Manchester, United Kingdom.
10 - 12 May 2004.
Record type:
Conference or Workshop Item
(Paper)
Abstract
This paper considers the radiation of sound from compact 2D or 3D sources located in an
otherwise rigid wall, bounding a region of fluid flowing parallel to the wall. The sound
radiation problem is modeled using a wavenumber decomposition. Numerical results show
how the radiated power and directivity depend on the free-stream flow Mach number and
the thickness of the boundary layer adjacent to the wall. The numerical model is validated
by comparing the sound power and directivity obtained in the limiting case of a thin
boundary layer with that obtained from an alternative analytical model in which the flow is
uniform and there is slip at the boundary.
This record has no associated files available for download.
More information
Published date: 2004
Venue - Dates:
10th AIAA/CEAS Aeroacoustics Conference, Manchester, UK, Manchester, United Kingdom, 2004-05-10 - 2004-05-12
Identifiers
Local EPrints ID: 10763
URI: http://eprints.soton.ac.uk/id/eprint/10763
PURE UUID: 3cb13f9f-cb30-40f7-94ff-41237cfd0ac2
Catalogue record
Date deposited: 28 Jul 2005
Last modified: 15 Jan 2024 17:54
Export record
Contributors
Author:
M.G. Smith
Author:
C.L. Morfey
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics