Numerical Simulation Study on Environment-Friendly Floating Reef in Offshore Ecological Belt under Wave Action
Numerical Simulation Study on Environment-Friendly Floating Reef in Offshore Ecological Belt under Wave Action
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DOI：
10.3390/w13162257
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发表时间：
2021-08
期刊：
影响因子：
3.4
通讯作者：
Yun Pan;Huanhuan Tong;Yang Zhou;Can Liu;Dawen Xue
中科院分区：
文献类型：
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作者：
Yun Pan;Huanhuan Tong;Yang Zhou;Can Liu;Dawen Xue
人工浮礁是滨海生态廊道的重要组成部分。通过优化系泊方式大规模建设浮礁，可有效提高沿海工程的生态效应。人工浮礁属于海岸工程，抗浪性是其结构设计的基础。本文采用有限元法和集总质量系泊模型，详细阐述了力与运动耦合的处理方法、浮礁离水面的判断方法以及水质量点速度和加速度的校正方法。通过物理实验和数值模拟结果的对比分析，验证了数值模型的正确性。最后，采用一种新型系泊的动态响应数值模型，分析了浮礁俯仰角、系泊绳张力和渔网固定点总张力的历时变化规律。本研究旨在为人工浮礁的结构形状优化、浮体匹配和配重优化提供依据。
An artificial floating reef is an important part of the coastal ecological corridor. The large-scale construction of floating reefs by optimizing mooring methods can effectively improve the ecological effects of coastal projects. The artificial floating reef belongs to coastal engineering, and wave resistance is fundamental to its structural design. In this paper, the method for processing coupling forces and motion, the method for judging the floating reef out of water surface, and the method for correcting velocity and acceleration of water mass points are elaborated in detail by using the finite element method and lumped-mass mooring model. By comparing and analyzing the results of physical experiment and numerical simulation, the correctness of the numerical model is verified. Finally, the diachronic variation of pitching angle of floating reef, the tension of the mooring rope, and the total tension of the fixed points of the fishing net were analyzed by the dynamic response numerical mode with a new type of mooring. The purpose of the current study was to provide a basis for the optimization of structure shape, the matching of floating body, and the counterweight of artificial floating reef.