An Efficient Three-Dimensional Coupled Normal Mode Model and Its Application to Internal Solitary Wave Problems

doi:10.1088/0256-307X/35/8/084301

Chin. Phys. Lett.

2018, Vol. 35

Issue (8): 084301 DOI: 10.1088/0256-307X/35/8/084301

FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS)

An Efficient Three-Dimensional Coupled Normal Mode Model and Its Application to Internal Solitary Wave Problems

Ze-Zhong Zhang^1,2, Wen-Yu Luo^1,2**, Ren-He Zhang¹

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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Ze-Zhong Zhang, Wen-Yu Luo, Ren-He Zhang 2018 Chin. Phys. Lett. 35 084301

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Abstract We present an efficient three-dimensional coupled-mode model based on the Fourier synthesis technique. In principle, this model is a one-way model, and hence provides satisfactory accuracy for problems where the forward scattering dominates. At the same time, this model provides an efficiency gain of an order of magnitude or more over two-way coupled-mode models. This model can be applied to three-dimensional range-dependent problems with a slowly varying bathymetry or internal waves. A numerical example of the latter is demonstrated in this work. Comparisons of both accuracy and efficiency between the present model and a benchmark model are also provided.

Received: 29 January 2018 Published: 15 July 2018

PACS:	43.30.Bp	(Normal mode propagation of sound in water)
	43.25.Rq	(Solitons, chaos)
	43.20.Bi	(Mathematical theory of wave propagation)

Fund: Supported by the National Natural Science Foundation of China under Grant No 11774374, and the Natural Science Foundation of Shandong Province of China under Grant No ZR2016AL10.

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https://cpl.iphy.ac.cn/10.1088/0256-307X/35/8/084301 OR https://cpl.iphy.ac.cn/Y2018/V35/I8/084301

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	Ze-Zhong Zhang
	Wen-Yu Luo
	Ren-He Zhang

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