A FVCOM-based unstructured grid wave-current-sediment model
A FVCOM-based unstructured grid wave-current-sediment model
A FVCOM-based unstructured grid wave-current-sediment model
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J. Ocean Univ. China (Oceanic and Coastal Sea Research) Doctor ForumDOI 10.1007/s11802-011-1788-3ISSN 1672-5182, 2011 10 (1): 1-8http://www.ouc.edu.cn/xbywb/E-mail:xbywb@ouc.edu.cnA <strong>FVCOM</strong>-Based Unstructured Grid Wave, Current, SedimentTransport Model, I. Model Description and ValidationWU Lunyu 1), 2) , CHEN Changsheng 3), 4) , GUO Peifang 1), * , SHI Maochong 1) , QI Jianhua 3) ,and GE Jianzhong 4)1) Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, P. R. China2) First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, P. R. China3) School for Marine Science and Technology, University of Massachusetts-Dartmouth, New Bedford, Massachusetts, USA4) State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, P. R. China(Received July 15, 2010; revised September 25, 2010; accepted October 29, 2010)© Ocean University of China, Science Press and Springer-Verlag Berlin Heidelberg 2010Abstract An effort was made to couple <strong>FVCOM</strong> (a three-dimensional (3D), <strong>unstructured</strong> <strong>grid</strong>, Finite VolumeCoastal Ocean Model) and <strong>FVCOM</strong>-SWAVE (an <strong>unstructured</strong> <strong>grid</strong>, finite-volume surface <strong>wave</strong> <strong>model</strong>) for thestudy of nearshore ocean processes such as tides, circulation, storm surge, <strong>wave</strong>s, <strong>sediment</strong> transport, and morphologicalevolution. The coupling between <strong>FVCOM</strong> and <strong>FVCOM</strong>-SWAVE was achieved through incorporating3D radiation stress, <strong>wave</strong>-<strong>current</strong>-<strong>sediment</strong>-related bottom boundary layer, sea surface stress parameterizations,and morphology process. <strong>FVCOM</strong> also includes a 3D <strong>sediment</strong> transport module. With accurate fitting of irregularcoastlines, the <strong>model</strong> provides a unique tool to study <strong>sediment</strong> dynamics in coastal ocean, estuaries, and wetlandswhere local geometries are characterized by inlets, islands, and intertidal marsh zones. The <strong>model</strong> was validatedby two standard benchmark tests: 1) spectral <strong>wave</strong>s approaching a mild sloping beach and 2) morphologicalchanges of seabed in an idealized tidal inlet. In Test 1, <strong>model</strong> results were compared with both analytical solutionsand laboratory experiments. A further comparison was also made with the structured <strong>grid</strong> Regional Ocean ModelSystem (ROMS), which provides an insight into the performance of the two <strong>model</strong>s with the same open boundaryforcing.Key words <strong>FVCOM</strong>; coupling; radiation stress; <strong>wave</strong>-<strong>current</strong>-<strong>sediment</strong>-related bottom boundary layer; morphology* Corresponding author. Tel: 0086-532-82032759E-mail: pfguo@ouc.edu.cn
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