FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Three-Dimensional Sound Propagation and Scattering in Two-Dimensional Waveguides |
QIN Ji-Xing1,2**, LUO Wen-Yu1, ZHANG Ren-He1, YANG Chun-Mei1,2 |
1State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190 2University of Chinese Academy of Sciences, Beijing 100049
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Cite this article: |
QIN Ji-Xing, LUO Wen-Yu, ZHANG Ren-He et al 2013 Chin. Phys. Lett. 30 114301 |
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Abstract A coupled-mode method for three-dimensional acoustic propagation and scattering in two-dimensional waveguides is presented. This method synthesizes the three-dimensional field solution by using Fourier transform techniques based on a sequence of two-dimensional problems, each of which is solved by a numerical model recently developed by Luo et al. [Chin. Phys. Lett. 29 (2012) 014302]. Numerical results indicate that the present model is remarkably accurate, and thus can serve as benchmark against other numerical models. In addition, this model can be applied to realistic problems, and can also be used to analyze horizontal refraction in some range-dependent waveguides in reality, such as the continental shelf environment, ridge-like bathymetry, and underwater trenches.
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Received: 03 July 2013
Published: 30 November 2013
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PACS: |
43.30.Bp
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(Normal mode propagation of sound in water)
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43.30.Gv
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(Backscattering, echoes, and reverberation in water due to combinations of boundaries)
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43.20.Fn
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(Scattering of acoustic waves)
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