A FVCOM-Based Unstructured Grid Wave, Current, Sediment Transport Model, I.Model Description and Val

• 作 者: WU Lunyu CHEN Changsheng GUO P
• 机 构: Physical Oceanography Laboratory,First Institute of Oceanography,School for Marine Science and Techn
• 出 处: 中国海洋大学学报（英文版）
• 发表日期: 2004年期
• 关键词: FVCOM coupling radiation stress wave-current-sediment-related bottom boundary la

An effort was made to couple FVCOM (a three-dimensional (3D), unstructured grid, Finite Volume Coastal Ocean Model) and FVCOM-SWAVE (an unstructured grid, finite-volume surface wave model) for the study of nearshore ocean processes such as tides, circulation, storm surge, waves, sediment transport, and morphological evolution. The coupling between FVCOM and FVCOM-SWAVE was achieved through incorporating 3D radiation stress, wave-current-sediment-related bottom boundary layer, sea surface stress parameterizations, and morphology process. FVCOM also includes a 3D sediment transport module. With accurate fitting of irregular coastlines, the model provides a unique tool to study sediment dynamics in coastal ocean, estuaries, and wetlands where local geometries are characterized by inlets, islands, and intertidal marsh zones. The model was validated by two standard benchmark tests: 1) spectral waves approaching a mild sloping beach and 2) morphological changes of seabed in an idealized tidal inlet. In Test 1, model results were compared with both analytical solutions and laboratory experiments. A further comparison was also made with the structured grid Regional Ocean Model System (ROMS), which provides an insight into the performance of the two models with the same open boundary forcing.