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Sound radiation from exponentially growing and decaying surface waves

Sound radiation from exponentially growing and decaying surface waves
Sound radiation from exponentially growing and decaying surface waves
A simplified model problem is used to illustrate some of the parameters controlling the radiation of sound into an ambient medium due to the growth and subsequent decay of subsonic travelling waves, such as may occur via non-linear interactions in turbulent free shear flows. It is shown that substantial sound may be generated by apparently subsonic modes as a result of their growth and decay characteristics. Low frequency modes that saturate over a short timescale are the most effective radiators.
0022-460X
355-361
Sandham, N.D.
0024d8cd-c788-4811-a470-57934fbdcf97
Morfey, C.L.
d5f9a8d0-7d8a-4915-a522-bf49dee111f2
Hu, Z.W.
dd985844-1e6b-44ba-9e1d-fa57c6c88d65
Sandham, N.D.
0024d8cd-c788-4811-a470-57934fbdcf97
Morfey, C.L.
d5f9a8d0-7d8a-4915-a522-bf49dee111f2
Hu, Z.W.
dd985844-1e6b-44ba-9e1d-fa57c6c88d65

Sandham, N.D., Morfey, C.L. and Hu, Z.W. (2006) Sound radiation from exponentially growing and decaying surface waves. Journal of Sound and Vibration, 294, 355-361. (doi:10.1016/j.jsv.2005.10.012).

Record type: Article

Abstract

A simplified model problem is used to illustrate some of the parameters controlling the radiation of sound into an ambient medium due to the growth and subsequent decay of subsonic travelling waves, such as may occur via non-linear interactions in turbulent free shear flows. It is shown that substantial sound may be generated by apparently subsonic modes as a result of their growth and decay characteristics. Low frequency modes that saturate over a short timescale are the most effective radiators.

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Published date: 2006

Identifiers

Local EPrints ID: 23584
URI: https://eprints.soton.ac.uk/id/eprint/23584
ISSN: 0022-460X
PURE UUID: 263b5a4f-4975-41bb-882f-a7e4f2cf0242
ORCID for N.D. Sandham: ORCID iD orcid.org/0000-0002-5107-0944

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Date deposited: 24 Mar 2006
Last modified: 06 Jun 2018 12:55

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