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Pulse propagation of acoustic waves scattered in a three-dimensional channel

Authors :
Alan M. Whitman
Mark J. Beran
Source :
Waves in Random Media. 10:231-251
Publication Year :
2000
Publisher :
Informa UK Limited, 2000.

Abstract

In a previous paper (Whitman et al 1999 Waves Random Media 9 1–11) we discussed the scattering of acoustic waves by random sound-speed fluctuations in a two-dimensional channel and presented an asymptotic form for an acoustic pulse propagating in the channel. Here we include the three-dimensional effect of transverse scattering. We find an asymptotic solution in which initially the two-dimensional mode-transfer effect is more important than the transverse scattering effect. However, for large enough propagation distances the transverse scattering effect dominates the pulse spread. In this paper we shall show the form of the pulse shape in both propagation ranges as well as in the transition regime. We shall begin with a discussion of the physics of the problem and then present a mathematical discussion.

Details

ISSN :
13616676 and 09597174
Volume :
10
Database :
OpenAIRE
Journal :
Waves in Random Media
Accession number :
edsair.doi...........33bbdf41c9d3b189ceea8bb32ab8c3fb
Full Text :
https://doi.org/10.1080/13616670009409772