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    A nonhydrostatic version of FVCOM : 1. Validation experiments

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    2009JC005525.pdf (2.776Mb)
    Date
    2010-11-13
    Author
    Lai, Zhigang  Concept link
    Chen, Changsheng  Concept link
    Cowles, Geoffrey W.  Concept link
    Beardsley, Robert C.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/4161
    As published
    https://doi.org/10.1029/2009JC005525
    DOI
    10.1029/2009JC005525
    Keyword
     Nonhydrostatic; Unstructured grid; Finite volume method 
    Abstract
    The unstructured grid finite volume coastal ocean model (FVCOM) system has been expanded to include nonhydrostatic dynamics. This addition uses the factional step method with both split mode explicit and semi-implicit schemes. The unstructured grid finite volume method, combined with a correction of the final free surface from its intermediate value with inclusion of nonhydrostatic effects, efficiently reduces numerical damping and thus ensures second-order accuracy of the solutions with local/global volume conservation. Numerical experiments have been made to fully validate the nonhydrostatic FVCOM, including surface standing and solitary waves in idealized flat- and sloping-bottomed channels in homogeneous conditions, the density adjustment problem for lock exchange flow in a flat-bottomed channel, and two-layer internal solitary wave breaking on a sloping shelf. The model results agree well with the relevant analytical solutions and laboratory data. These validation experiments demonstrate that the nonhydrostatic FVCOM is capable of resolving complex nonhydrostatic dynamics in coastal and estuarine regions.
    Description
    Author Posting. © American Geophysical Union, 2010. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 115 (2010): C11010, doi:10.1029/2009JC005525.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Journal of Geophysical Research 115 (2010): C11010
     

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