Research PaperNo Access

Determination of Modes in the Ice–Water Bi-layer Waveguide

Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, P. R. China

Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Harbin 150001, P. R. China

College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, P. R. China

E-mail Address: tangshengyu@hrbeu.edu.cn

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Guangping Zhu

Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, P. R. China

Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Harbin 150001, P. R. China

College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, P. R. China

E-mail Address: guangpingzhu@hrbeu.edu.cn

Corresponding author.

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Xiaoyu Wang

Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, P. R. China

Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Harbin 150001, P. R. China

College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, P. R. China

E-mail Address: xiaoyu.spring@foxmail.com

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, and

Jingwei Yin

Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, P. R. China

Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Harbin 150001, P. R. China

College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, P. R. China

E-mail Address: yinjingwei@hrbeu.edu.cn

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https://doi.org/10.1142/S2591728521500286Cited by:1 (Source: Crossref)

Abstract

The seismic method on ice provides rich information and a feasible technical way for acoustic study in ice-covered water. This paper presents a method to determine the modes in ice–water bi-layer waveguides. We achieve the purpose by deducing the scaled boundary formulation for solid and fluid layers then coupling them with the coupling matrix. The wave numbers and mode shapes are compared with the results of the finite element method. It shows that the configuration for ice–water bi-layer waveguide is of high precision. In underwater acoustic applications, the depth of water is comparatively large relative to ice thickness, which addresses the additional difficulty of accuracy in high frequency. The study on convergence is carried out, and approximate formulas are addressed based on the calculated results, giving a quick insight into piratical application.

Keywords:

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