Meshing requirements for tidal modeling in the Western North Atlantic

    Authors

    S. C. Hagen;D. M. Parrish

    Comments

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    Abbreviated Journal Title

    Int. J. Comput. Fluid Dyn.

    Keywords

    mesh generation; localized truncation error analysis; tidal; computations; shallow water equations; TRUNCATION ERROR; GRIDS; Mechanics; Physics, Fluids & Plasmas

    Abstract

    This paper presents an a posteriori approach to unstructured mesh generation via a localized truncation error analysis and applies it to the Western North Atlantic Tidal (WNAT) model domain. The WNAT model domain encompasses the Gulf of Mexico, the Caribbean Sea, and the North Atlantic Ocean east to the 60degreesW Meridian. Herein, we pay particular attention to the area surrounding the Bahamas. A bathymetric data set with fine resolution is employed in seven separate linear, harmonic simulations of shallow water tidal flow for seven different tidal-forcing constituents. Each set of simulation results is used to perform a truncation error analysis of a linear, harmonic form of the depth-averaged momentum equations for each of the seven different tidal-forcing frequencies. Truncation error is then driven to a more uniform, domain-wide value by solving for local node spacing requirements. The process is built upon successful research aiming to produce unstructured grids for large-scale domains that can be used in the accurate and efficient modeling of shallow water flow. The methodology described herein can also be transferred to other modeling applications.

    Journal Title

    International Journal of Computational Fluid Dynamics

    Volume

    18

    Issue/Number

    7

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    585

    Last Page

    595

    WOS Identifier

    WOS:000224820100003

    ISSN

    1061-8562

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