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首页> 外文期刊>Ocean Engineering >Numerical investigation of the interaction between an inverse T-type fixed/floating breakwater and regular/irregular waves
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Numerical investigation of the interaction between an inverse T-type fixed/floating breakwater and regular/irregular waves

机译：反T型固定/浮动防波堤与规则/不规则波相互作用的数值研究

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摘要

This paper presents a numerical analysis of nonlinear interaction between inverse T-type free surface breakwater and regular/irregular waves using a zonal hybrid RANS/laminar method based on an improved mesh updating strategy, which divides the whole computation domain into several parts to avoid low quality mesh elements caused by the large-scale movement. Each mesh zone is specified with different degrees of motion freedom. In the stationary zone where the flow is less influenced by the body motion, the flow is assumed to be laminar to avoid energy loss during the wave propagation. The BANS turbulence model applies only to the moving zones that move with specified motion components (sway/heave/pitch). The zonal hybrid RANS/laminar method is validated by comparison with the experimental data measured under a regular wave with period T-w = 1.0 s and amplitude A = 0.0192 m. The simulated motion responses, especially the sway motion amplitudes, of the floating breakwater are agree well with the experimental measurements. The motion responses and the energy-dissipating performances of the fixed/floating inverse T-type-type breakwater under regular/irregular waves are further investigated.
机译：本文基于改进的网格更新策略，使用区域混合RANS /层流方法，对逆T型自由面防波堤与规则/不规则波之间的非线性相互作用进行了数值分析，该分析将整个计算域分为几个部分以避免大规模运动引起的高质量网格元素。为每个网格区域指定了不同的运动自由度。在流动受人体运动影响较小的静止区域，假定流动为层流，以避免在波传播过程中能量损失。 BANS湍流模型仅适用于以指定运动分量（摇摆/升沉/俯仰）运动的运动区域。通过与在周期T-w = 1.0 s和振幅A = 0.0192 m的规则波下测量的实验数据进行比较，验证了区域混合RANS /层状方法的有效性。浮动防波堤的模拟运动响应，特别是摇摆运动幅度，与实验测量结果吻合良好。进一步研究了固定/漂浮逆T型防波堤在规则/不规则波作用下的运动响应和耗能性能。

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