Title

Meshing Requirements For Tidal Modeling In The Western North Atlantic

Keywords

Localized truncation error analysis; Mesh generation; Shallow water equations; Tidal computations

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 60°W 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.

Publication Date

10-1-2004

Publication Title

International Journal of Computational Fluid Dynamics

Volume

18

Issue

7

Number of Pages

585-595

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1080/10618560310001596819

Socpus ID

9144224853 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/9144224853

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