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Citation:
　Zhigang Zhang,Yunzhou Li,Guanghua He,et al.Manipulating Scattering Performance of Offshore Structures in Water Waves Using a Wavelength Modulator[J].Journal of Marine Science and Application,2025,(6):1141-1149.[doi:10.1007/s11804-025-00653-0]
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Manipulating Scattering Performance of Offshore Structures in Water Waves Using a Wavelength Modulator

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Title:
Manipulating Scattering Performance of Offshore Structures in Water Waves Using a Wavelength Modulator
Author(s):
Zhigang Zhang1; 2; 3; 4;  Yunzhou Li3;  Guanghua He5;  Zhengxiao Luan5;  Qiang Zhao3;  Jiming Zhang3;  Juncheng Wang3
Affilations:
Author(s):
Zhigang Zhang1; 2; 3; 4;  Yunzhou Li3;  Guanghua He5;  Zhengxiao Luan5;  Qiang Zhao3;  Jiming Zhang3;  Juncheng Wang3
1. School of Mechanical Engineering, Shandong University, Jinan, 250061, China;
2. Key Laboratory of High Efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education, Jinan, 250061, China;
3. Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, 266061, China;
4. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China;
5. School of Ocean Engineering, Harbin Institute of Technology, Weihai, Weihai, 264209, China
Keywords:
Water-wave field; Scattering performance; Space transformation method; Wavelength modulator; Anisotropic medium
分类号:
-
DOI:
10.1007/s11804-025-00653-0
Abstract:
Through active manipulation of wavelengths, a structure exposed to a water-wave field can achieve a target hydrodynamic performance. Based on the form invariance of the governing equation for shallow water waves, wavelength modulators have been proposed using the space transformation method, which enables wavelength manipulation by distributing an anisotropic medium that incorporates water depth and gravitational acceleration within the modulation space. First, annular wavelength modulators were designed using the space transformation method to reduce or amplify the wavelength of shallow water waves. The control method of wavelength scaling ratios was investigated. In addition to plane waves, the wavelength modulator was applied to manipulate the wavelength of cylindrical waves. Furthermore, the interactions between a vertical cylinder and modulated water waves were studied. Results indicate that the wavelength can be arbitrarily reduced or amplified by adjusting the dimensional parameters of the modulator. Additionally, the modulator is effective for plane waves and cylindrical waves. This wavelength modulator can enable the structure to achieve the desired scattering characteristics at the target wavelength.

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Memo

Memo:
Received date:2024-7-29;Accepted date:2024-11-20。<br>Foundation item:This study was supported by National Key R&amp;D Program of China (2022YFC3104200); the China Postdoctoral Science Foundation (2023M742157); the Shandong Province Taishan Scholars Project (tsqn201909172); the Shandong Provincial Natural Science Foundation (ZR2023QA097); the Open Research Fund Program of State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology (LP2309); and the Innovation Project of Qingdao Post-Doctoral (QDBSH20230202121).<br>Corresponding author:Zhigang Zhang,E-mail:zhangzg@sdu.edu.cn
Last Update: 2025-12-26