Development and validation of a three-dimensional, wave-current coupled model on unstructured meshes
Development and validation of a three-dimensional, wave-current coupled model on unstructured meshes
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非结构化网格上三维波流耦合模型的开发和验证
DOI：
10.1007/s11433-010-4192-x
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Shen Yong-Ming
中科院分区：
文献类型：
--
作者：
Wang Jin-Hua;Shen Yong-Ming
使用非结构化网格为在潮汐溪，屏障和岛屿的复杂地貌中建模流动提供了很大的灵活性，在感兴趣的区域而不是其他地方具有精细的网格分辨率。本文建立了非结构三维全耦合波流模型。首先，开发了一个并行的非结构波模块。波浪性质的变化由波能方程控制，该方程包括波流相互作用和波破的耗散代表。然后，对现有的有限体积海岸海洋模型（FVCOM）进行修正，使之与波浪模型相耦合。耦合过程包括与深度相关的波辐射应力项、斯托克斯漂移、波浪产生的压力传递到平均动量方程的垂直传递、湍流动能方程中作为源项的波耗散以及波能的平均平流和折射。给出了几个应用程序来评价所开发的模型。特别对卡特里娜飓风引起的风暴潮进行了研究。所获得的结果已与有关波浪高度和水位高度的情况测量结果进行了比较，表明该模型在再现所调查事件方面具有良好的准确性。与多芬岛的水位测量结果相比，波浪诱导水位设置将归一化均方根误差从0.301减小到0.257 m，相关系数从0.860增加到0.929。进行了几次运行来分析波浪的影响。实验表明，在波效应过程中，辐射应力和波致表面应力比波致底部应力对水位的影响更大。卡特里娜飓风的模拟表明，在风暴潮期间，将波浪效应纳入到水位的后预报中是很重要的。
Using unstructured meshes provides great flexibility for modeling the flow in complex geomorphology of tidal creeks, barriers and islands, with refined grid resolution in regions of interest and not elsewhere. In this paper, an unstructured three-dimensional fully coupled wave-current model is developed. Firstly, a parallel, unstructured wave module is developed. Variations in wave properties are governed by a wave energy equation that includes wave-current interactions and dissipation representative of wave breaking. Then, the existing Finite-Volume Coastal Ocean Model (FVCOM) is modified to couple with the wave module. The couple procedure includes depth dependent wave radiation stress terms, Stokes drift, vertical transfer of wave-generated pressure transfer to the mean momentum equation, wave dissipation as a source term in the turbulence kinetic energy equation, and mean current advection and refraction of wave energy. Several applications are presented to evaluate the developed model. In particular the wind and wave-induced storm surge generated by Hurricane Katrina is investigated. The obtained results have been compared to thein situmeasurements with respect to the wave heights and water level elevations revealing good accuracy of the model in reproduction of the investigated events. In a comparison to water level measurements at Dauphin Island, inclusion of the wave induced water level setup reduced the normalized root mean square error from 0.301 to 0.257 m and increased the correlation coefficient from 0.860 to 0.929. Several runs were carried out to analyze the effects of waves. The experiments show that among the processes that represent wave effects, radiation stress and wave-induced surface stress are more important than wave-induced bottom stress in affecting the water level. The Hurricane Katrina simulations showed the importance of the inclusion of the wave effects for the hindcast of the water levels during the storm surge.
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DOI：
10.1016/j.dsr2.2006.08.007
发表时间：
2006-11
影响因子：
3
作者：
R. Ji;Changsheng Chen;P. Franks;D. Townsend;E. Durbin;R. Beardsley;R. Lough;R. Houghton
通讯作者：
R. Ji;Changsheng Chen;P. Franks;D. Townsend;E. Durbin;R. Beardsley;R. Lough;R. Houghton
影响因子：
2.4
作者：
R. Szymkiewicz
通讯作者：
R. Szymkiewicz
影响因子：
2.3
作者：
Jennifer M. Brown;J. Wolf
通讯作者：
Jennifer M. Brown;J. Wolf
影响因子：
2.2
作者：
J. Beckers;M. Rixen
通讯作者：
J. Beckers;M. Rixen
影响因子：
2.2
作者：
Hai-Tien Lee;R. Ellingson
通讯作者：
Hai-Tien Lee;R. Ellingson