SPH-LES model for numerical investigation of wave interaction with partially immersed breakwater
SPH-LES model for numerical investigation of wave interaction with partially immersed breakwater
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DOI：
10.1142/s0578563404000872
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发表时间：
2004-03-01
影响因子：
2.4
通讯作者：
Memita, T
中科院分区：
文献类型：
--
作者：
Gotoh, H;Shao, SD;Memita, T
本文通过试验和数值模拟研究了部分浸没帘式防波堤对规则波的反射和透射特性。考虑了防波堤不越浪和波浪越浪两种情况，比较了不同消浪效果的差异。采用不可压缩光滑粒子流体动力学（SPH）理论结合大涡模拟（LES）模型作为数值工具。SPH方法是鲁棒的跟踪自由表面没有数值扩散和LES模型能够分析湍流和涡流在波防波堤相互作用。计算结果与实验波形吻合较好，验证了SPH-LES模型的准确性。计算还揭示了波浪能量的耗散主要是由于波浪在传播和反射过程中产生的湍流和旋涡脱落。
The reflection and transmission characteristics of regular waves by a partially immersed curtain-type breakwater have been studied by the experiment and numerical model in the paper. Non-overtopping and overtopping of the breakwater by the incident wave were considered to compare different wave dissipation efficiencies. An incompressible Smoothed Particle Hydrodynamics (SPH) theory combined with a Large Eddy Simulation (LES) model was employed as the numerical tool. The SPH method is robust for tracking free surfaces without numerical diffusion and the LES model is capable of analyzing turbulence and eddy vortices during wave-breakwater interactions. A good agreement between computational and experimental wave profiles verifies the accuracy of the SPH-LES model. The computations also disclose that the wave energy dissipation is mainly attributed to the turbulence production and vortex shedding during the wave transmission and reflection processes.