Computational Model for Wave Attenuation by Flexible Vegetation
Computational Model for Wave Attenuation by Flexible Vegetation
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DOI：
10.1061/(asce)ww.1943-5460.0000487
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发表时间：
2019-01-01
影响因子：
2.2
通讯作者：
Dawson, Clint N.
中科院分区：
文献类型：
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作者：
Mattis, Steven A.;Kees, Christopher E.;Dawson, Clint N.
沿海植被具有众所周知的衰减波浪的作用；然而，一般波浪和植被场景的衰减的量化测量尚不清楚，因此必须针对单独的设置进行现场和实验室研究。针对此类场景进行这些研究的标准做法非常昂贵，并且很难更改参数和设置。我们提出并验证了一种波浪槽计算模型，该模型可用于研究柔性植被上的波浪衰减，该模型基于先前开发的用于流体与植被相互作用的浸没结构方法，从而以更灵活和更便宜的替代方案增强了现场和实验室研究。该计算框架的主要优点是几乎所有项都源自第一原理，而不需要大量凭经验确定的参数。进行了一系列计算实验，并对波的衰减相对于波高、波谱和能量进行了分析。将结果与计算波水槽旨在复制的实验结果进行比较。
Coastal vegetation has a well-known effect of attenuating waves; however, quantifiable measures of attenuation for general wave and vegetation scenarios are not well known, so field and laboratory studies must be performed for individual setups. The standard practice of performing these studies for such scenarios is extremely expensive, and it is difficult to change parameters and setups. We presented and validated a computational model for a wave flume that can be used for studies of wave attenuation over flexible vegetation based on the previously developed immersed-structure method for fluid-vegetation interaction, thereby augmenting field and laboratory studies with a more-flexible and less-expensive alternative. The main advantage of this computational framework is that almost all terms are derived from first principles without requiring a large number of empirically determined parameters. A series of computational experiments were performed, and an analysis of the wave attenuation with respect to wave heights, spectra, and energy was conducted. Results were compared to results from experiments that the computational wave flume was designed to replicate.