Numerical modeling of dynamic responses and mooring forces of submerged floating breakwater
Numerical modeling of dynamic responses and mooring forces of submerged floating breakwater
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DOI：
10.1016/j.coastaleng.2006.04.001
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发表时间：
2006-09
影响因子：
4.4
通讯作者：
M. Rahman;N. Mizutani;K. Kawasaki
中科院分区：
文献类型：
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作者：
M. Rahman;N. Mizutani;K. Kawasaki
采用流体体积(VOF)方法，建立了浮筒式潜式系泊防波堤在波浪作用下的非线性动力学以及垂向和斜向系泊线形对系缆的作用力的数值模型。该模型是建立在垂直平面上的二维波场模型。考虑了防波堤在很小时间步长内的横摇、垂荡和横摇等有限位移，并利用多孔体模型的概念处理了与防波堤表面相交的因波浪作用而改变位置的数值网格单元。此外，还进行了二维实验研究，以考察该模型的性能。计算结果与实测值的对比表明，所建立的数值模型能较好地再现浮体和系缆力的动力学特性。
Using the volume of fluid (VOF) method, a numerical model is developed to estimate the nonlinear dynamics of a pontoon type moored submerged breakwater under wave action and the forces acting on the mooring lines, for both the vertical and inclined mooring alignments. The model is developed for a two-dimensional wave field in a vertical plane. The finite displacements of the breakwater such as sway, heave and roll in a very small time step are considered and the numerical grid cells intersected by the breakwater surfaces for changing its position due to wave action are treated using the concept of porous body model. Also, two-dimensional experimental studies are carried out to investigate the performance of the proposed model. The comparison of the computed and measured results reveals that the developed numerical model can reproduce well the dynamics of the floating body and the mooring line forces.