Numerical Simulation of Hydrodynamic Resonance In a Narrow Gap Between Twin Bodies Subject to Water Waves
Numerical Simulation of Hydrodynamic Resonance In a Narrow Gap Between Twin Bodies Subject to Water Waves
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发表时间：
2008
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通讯作者：
Lin Lu;B. Teng;Liang Cheng;Yu-cheng Li
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文献类型：
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作者：
Lin Lu;B. Teng;Liang Cheng;Yu-cheng Li
本文建立了一个数值波浪水槽来模拟两个相同尺寸的物体之间形成的狭窄间隙中的水动力共振。数值波浪水槽是在有限单元法的框架下，基于Navier-Stokes方程和流体净体积法。数值计算结果与文献中已有的实验数据的比较表明，数值波浪水槽能够很好地预测窄缝中的水动力共振现象。结果表明，窄间隙中自由表面振荡的振幅并不像势能理论所预测的那样大，而是有限的。利用数值波浪水槽研究了无量纲入射波频率对共振的影响。
A numerical wave flume is developed to simulate the hydrodynamic resonance in a narrow gap formed between twin bodies of identical dimensions. The numerical wave flume is based on the Navier-Stokes equations and CLEAR-Volume of Fluid method in the frame of Finite Element Method. Comparisons of the present numerical results and the experimental data available in literature show that the present numerical wave flume works well in predicting the well-known hydrodynamic resonance in narrow gaps. It is found that the amplitudes of the free surface oscillations in the narrow gap are not as large as those predicted by the potential theory and are rather limited. The influence of non-dimensional incident wave frequency on the resonance is examined using the numerical wave flume.