| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Numerical Solution of Range-Dependent Acoustic Propagation |
| 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: |
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QIN Ji-Xing, LUO Wen-Yu, ZHANG Ren-He et al 2013 Chin. Phys. Lett. 30 074301 |
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Abstract The direct global matrix approach can be applied to modeling of range-dependent sound propagation in order to achieve numerically stable and accurate solutions. By solving the global system directly, this method features high efficiency as well as accuracy by avoiding error accumulation. It is an important issue to solve linear systems numerically in the direct global matrix approach, especially for the large-scale problems. An efficient and memory-saving algorithm is developed for solving the global system, in which the global coefficient matrix is treated as a block pentadiagonal matrix. As a result, this numerical model has the ability to solve large-scale problems on regular computers. Numerical examples are also presented to demonstrate the accuracy and efficiency of this method.
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Received: 26 April 2013
Published: 21 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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02.10.Yn
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(Matrix theory)
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