Effects of focusing on the nonlinear interaction between two collinear finite amplitude sound beams
作者:
Jacqueline Naze Tjo/tta,
Sigve Tjo/tta,
Erlend H. Vefring,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1991)
卷期:
Volume 89,
issue 3
页码: 1017-1027
ISSN:0001-4966
年代: 1991
DOI:10.1121/1.400523
出版商: Acoustical Society of America
数据来源: AIP
摘要:
A study of the propagation and interaction of two collinear finite amplitude sound beams, presented in a previous paper [Naze Tjo/tta et al., “Propagation and interaction of two collinear finite amplitude sound beams,” J. Acoust. Soc. Am.88, 2859–2870 (1990)] is extended to include the effects of focusing. The validity of the parabolic equation when applied to strongly focused sound beams is discussed. Equations and algorithms based on a transformed parabolic equation are presented and used to compute the interaction between two collinear, focused sound beams, and between one plane wave and a focused sound beam. Numerical results are shown, with special emphasis on parametric generation and parametric reception of sound.
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