Modulation Mechanism of Acoustic Scattering in Underwater Corner Reflectors with Acoustic Metasurfaces

• Autorzy: Du Jiaman , Peng Zilong , Ge Lili , Lyu Shijin , Zhou Fulin , Liu Yan

Identyfikatory

DOI

10.24425/aoa.2023.146643

• Języki publikacji: EN

Abstrakty

EN

Using the tunderwater corner reflector (CR) to simulate the acoustic scattering characteristics of the military target is a new technology to counter active sonar detection. Existing underwater CRs only have the ability to interfere with the acoustic field, but have limitations in acoustic wave modulation. Therefore, acoustic metasurfaces applied on CRs to enhance the ability of acoustic wave modulation has a great application prospect. A fast prediction method based on the Kirchhoff approximation (KA) and the ray tracing theory is proposed to calculate the acoustic scattering characteristics of CR with acoustic metasurfaces in grooves array type. The accuracy of the method is verified by the finite element method (FEM) simulation. The modulation effect of CR with grooves array in different gradient combinations on the structural scattering acoustic field is analyzed. The research shows that the CR with different combinations of the acoustic metasurface has an obvious modulation effect on the amplitude of the acoustic waves and the deflection of acoustic field. In particular, the grooves array in combination with positive and negative gradients has an obvious deflection impact on the scattering acoustic field.

Słowa kluczowe

EN

acoustic scattering; metasurface; ray tracing; corner reflector; virtual source method

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2023
• Tom: Vol. 48, No. 4
• Strony: 465--473
• Opis fizyczny: Bibliogr. 21 poz., rys., wykr.

Twórcy

autor

Du Jiaman

• School of Energy and Power Engineering Jiangsu University of Science and Technology Zhenjiang, China

autor

Peng Zilong

• School of Energy and Power Engineering Jiangsu University of Science and Technology Zhenjiang, China

autor

Ge Lili

• School of Energy and Power Engineering Jiangsu University of Science and Technology Zhenjiang, China

autor

Lyu Shijin

• School of Energy and Power Engineering Jiangsu University of Science and Technology Zhenjiang, China
• National Key Laboratory on Ship Vibration and Noise China Ship Science Research Center Wuxi, China

autor

Zhou Fulin

• School of Naval Architecture, Ocean and Civil Engineering Shanghai Jiao Tong University Shanghai, China

autor

Liu Yan

• Shanghai Research Institute of Materials Shanghai, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).