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Modeling Study on the Hydrodynamic Environmental Impact Caused by the Sea for Regional Construction near the Yanwo Island in Zhoushan, China

1,2, 1,3,*, 1,2,*, 4 and 5
1
Key Laboratory of Coastal Disaster and Defence, Ministry of Education, Hohai University, Nanjing 210098, China
2
College of Oceanography, Hohai University, Nanjing 210098, China
3
College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
4
School of Civil and Ocean Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
5
Tianjin Research Institute for Water Transport Engineering, Tianjin 300000, China
*
Authors to whom correspondence should be addressed.
Water 2019, 11(8), 1674; https://doi.org/10.3390/w11081674
Received: 1 July 2019 / Revised: 27 July 2019 / Accepted: 9 August 2019 / Published: 13 August 2019
(This article belongs to the Section Hydrology)
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Abstract

Waves are one of the most important factors affecting offshore marine engineering. Accurate calculation of wave distribution is an important prerequisite to ensure the safety of coastal engineering construction. Due to the influence of complex topography, hydrological conditions, and marine structures on the propagation of waves offshore, slowly varying topography, refraction, diffraction, reflection, shallowness, and other phenomena may occur. This article combines the MIKE21 Spetral Waves (SW) wave model and the MIKE21 Boussinesq Waves (BW) wave model which are developed by Danish Hydraulic Institute (DHI) for a joint application (SW–BW nested model). It simulates the hydrodynamic environment of the Yanwo Island scenic area, located in Zhoushan, in both large and small ranges. In addition, wave height distribution and berthing stability of different breakwater planning schemes are calculated to optimize the layout of the breakwater. Through the analysis of simulation results, it is concluded that the hydraulic performance of Scheme 2 (the broken line section on the west side is 100 m long, and that on the east is 1200 m long, and the breakwater is rotated 8 degrees counterclockwise along the axis on the basis of Scheme 1) is better than that of Scheme 1 (the broken line section on the west side is 100 m long, and that on the east is 1100 m long), which can provide a more reliable construction reference for the construction of the Yanwo Island scenic area. View Full-Text
Keywords: SW–BW nested model; optimization of breakwater layout; wave height distribution; berthing stability; numerical simulation SW–BW nested model; optimization of breakwater layout; wave height distribution; berthing stability; numerical simulation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Gou, H.; Luo, F.; Li, R.; Dong, X.; Zhang, Y. Modeling Study on the Hydrodynamic Environmental Impact Caused by the Sea for Regional Construction near the Yanwo Island in Zhoushan, China. Water 2019, 11, 1674.

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