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首页> 外文期刊>Estuaries and coasts >Three-Dimensional Modeling of Storm Surge and Inundation Including the Effects of Coastal Vegetation
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Three-Dimensional Modeling of Storm Surge and Inundation Including the Effects of Coastal Vegetation

机译：包括沿海植被影响在内的风暴潮和洪水泛滥的三维建模

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Two-dimensional (2D) and three-dimensional (3D) hydrodynamic models are used to simulate the hurricaneinduced storm surge and coastal inundation in regions with vegetation. Typically, 2D stormsurgemodels use an enhanced Manning coefficient while 3D storm surge models use a roughness height to represent the effects of coastal vegetation on flow. This paper presents a 3D storm surge model which accurately resolves the effects of vegetation on the flow and turbulence. First, a vegetation-resolving 1DV Turbulent Kinetic Energy model (TKEM) is introduced and validated with laboratory data. This model is both robust enough to accurately model flows in complex canopies, while compact and efficient enough for incorporation into a 3D storm surgewave modeling system: Curvilinear Hydrodynamics in 3DSurface WAves Nearshore (CH3D-SWAN). Using the 3D vegetation-resolving model, three numerical experiments are conducted. In the first experiment, comparisons are made between the 2D Manning coefficient approach and the 3D vegetation-resolving approach for simple wind-driven flow. In a second experiment, 2D and 3D representations of vegetation produce similar inundations from the same hurricane forcing, but differences in momentum are found. In a final experiment, varying inundation between seemingly analogous 2D and 3D representations of vegetation are demonstrated, pointing to a significant scientific need for data within wetlands during storm surge events. This study shows that the complex flow structures within vegetation canopies can be accurately simulated using a vegetation-resolving 3D storm surgemodel, which can be used to assess the feasibility for future wetland restoration projects.
机译：使用二维（2D）和三维（3D）流体力学模型来模拟飓风引发的风暴潮和植被覆盖地区的沿海洪水。通常，2D风暴潮模型使用增强的Manning系数，而3D风暴潮模型使用粗糙度高度来表示沿海植被对流量的影响。本文提出了一个3D风暴潮模型，该模型可以准确地解决植被对水流和湍流的影响。首先，引入了植被解析的1DV湍动能模型（TKEM），并用实验室数据进行了验证。该模型既强大又健壮，可以精确地模拟复杂冠层中的流量，同时又足够紧凑，高效，可以并入3D风暴潮波建模系统：3DSurface Waves Nearshore（CH3D-SWAN）中的曲线流体动力学。使用3D植被解析模型，进行了三个数值实验。在第一个实验中，比较了2D Manning系数方法和3D植被解析方法以简化风驱动流的过程。在第二个实验中，植被的2D和3D表示在相同的飓风强迫作用下产生了相似的淹没，但发现了动量的差异。在最后的实验中，证明了在表面上类似的2D和3D植被表示之间的淹没变化，表明在风暴潮事件期间对湿地内的数据存在重大科学需求。这项研究表明，使用植被解析3D风暴潮模型可以准确地模拟植被冠层内部的复杂流动结构，该模型可用于评估未来湿地恢复项目的可行性。

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