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Equivalent source method based on mirror source method using plane wave expansion in shallow water waveguide
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Yi-shu CHEN1, Bo-xuan SHI2a, 2b, 3, Chao ZHANG2a, 2b, 3, De-jiang SHANG2a, 2b, 3
Journal of Ship Mechanics | 2025, 29(5) : 840 - 848
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Journal of Ship Mechanics | 2025, 29(5): 840-848
• Hydro/Structural Acoustics •
Equivalent source method based on mirror source method using plane wave expansion in shallow water waveguide
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Yi-shu CHEN1, Bo-xuan SHI2a, 2b, 3, Chao ZHANG2a, 2b, 3, De-jiang SHANG2a, 2b, 3
Affiliations
  • 1.Hangzhou Applied Acoustics Research Institute, Hangzhou 310012, China
  • 2a.National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China
  • 2b.College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
  • 3.Key Laboratory of Marine Information Acquisition and Security (Harbin Engineering University), Ministry of Industry and Information Technology, Harbin 150001, China
Published: 2025-05-20 doi: 10.3969/j.issn.1007-7294.2025.05.015
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An equivalent source method based on plane wave expansion and mirror imaging is proposed for predicting radiation from elastic structures in shallow water waveguide. This method uses the equivalent source framework and represents the Green’s function with plane wave expansion for virtual source intensities and far-field acoustic calculations. For seabed reflection coefficients dependent on incident angles, the Green’s function decomposes the spherical wave from a point source into plane waves, facilitating accurate reflection calculations on non-ideal boundaries. Comparisons with other Green’s function validate the computational accuracy. Numerical simulations of an elastic cylindrical shell under various excitation frequencies in shallow water waveguide confirm the method’s accuracy in sound field reconstruction.

shallow water waveguide  /  sound field prediction  /  mirror source method using plane wave expansion  /  equivalent source method
Yi-shu CHEN, Bo-xuan SHI, Chao ZHANG, De-jiang SHANG. Equivalent source method based on mirror source method using plane wave expansion in shallow water waveguide[J]. Journal of Ship Mechanics, 2025 , 29 (5) : 840 -848 . DOI: 10.3969/j.issn.1007-7294.2025.05.015
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Article Info
doi: 10.3969/j.issn.1007-7294.2025.05.015
  • Receive Date：2024-11-14
  • Online Date：2026-03-24
  • Published：2025-05-20
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  • Received：2024-11-14
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Affiliations
    1.Hangzhou Applied Acoustics Research Institute, Hangzhou 310012, China
    2a.National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China
    2b.College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
    3.Key Laboratory of Marine Information Acquisition and Security (Harbin Engineering University), Ministry of Industry and Information Technology, Harbin 150001, China
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https://castjournals.cast.org.cn/joweb/cblx/EN/10.3969/j.issn.1007-7294.2025.05.015
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