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Citation:
　Yongzhou Cheng,Zhiyuan Lin,Gan Hu,et al.Numerical Simulation of the Hydrodynamic Characteristics of the Porous I-type Composite Breakwater[J].Journal of Marine Science and Application,2022,(1):140-150.[doi:10.1007/s11804-022-00251-4]
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Numerical Simulation of the Hydrodynamic Characteristics of the Porous I-type Composite Breakwater

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Title:
Numerical Simulation of the Hydrodynamic Characteristics of the Porous I-type Composite Breakwater
Author(s):
Yongzhou Cheng1; 2;  Zhiyuan Lin1; 2;  Gan Hu1;  Xing Lyu1; 2
Affilations:
Author(s):
Yongzhou Cheng1; 2;  Zhiyuan Lin1; 2;  Gan Hu1;  Xing Lyu1; 2
1 School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China;
2 Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410114, China
Keywords:
Wave-structure interaction; Plate breakwater; Numerical simulation; Wave force; Regular wave; Hydrodynamic
分类号:
-
DOI:
10.1007/s11804-022-00251-4
Abstract:
Based on the three-dimensional Reynolds-averaged Navier-Stokes equation with the closure of renormalization group k-ε turbulence model and volume of fluid method, a wave-breakwater interaction numerical flume was developed to examine the wave-structure interaction of the porous I-type composite (PITC) breakwater. The transmission and reflection coefficients of the breakwater at different wave steepness H/L are quantitatively analyzed, and the wave-dissipating performance of the breakwater is compared. By changing the submerged depth of the breakwater, the velocity field, and vorticity field in the wave propagation process are analyzed, and the optimal working water depth of the new breakwater is explored. The results show that the vertical wave force on the PITC breakwater is greater than the horizontal wave force. In addition, during the wave dissipation process, the transverse baffle provided by the new breakwater destroys the trajectory of the water particle. In the interior of the wave-breaking chamber, the water that enters from the gap of the permeable plate mixes with the water entering through the bottom hole. The turbulence created by this process further dissipates the wave energy. The relative submergence depth of h/d has a great influence on the hydrodynamic characteristics. When the relative depth is large, most of the wave energy enters the breakwater, the wave energy dissipation of the breakwater is large, and the wave-absorbing effect is good. These research results provide important referential data for the study of permeable plate breakwaters.

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Memo

Memo:
Received date: 2021-07-19;Accepted date: 2021-10-24。
Foundation item:Supported by the National Natural Science Foundation of China under Grants Nos. 51679015 and 52071031.
Corresponding author:Yongzhou Cheng,E-mail:chengyongzhou@163.com
Last Update: 2022-04-22