Curvilinear Long Wave Hydrodynamic (CLHYD) for Tidal Circulation and Storm Surge Propagation

by Mary A. Cialone, USAE Waterways Experiment Station, United States,

Document Type: Proceeding Paper

Part of: Estuarine and Coastal Modeling


The objective of this paper is to demonstrate the ability of a two-dimensional long wave hydrodynamic model to simulate long wave processes in curvilinear coordinates. The series of tests presented are aimed at validating the model's ability to reproduce analytic solutions of the governing (Navier-Stokes) equations. The tests include an examination of grid skewness. CLHYD can simulate flow fields induced by wind fields, river discharges, as well as tidal forcing. This model is formulated in terms of generalized curvilinear coordinates to accommodate non-orthogonal curvilinear (boundary-fitted) grids. A curvilinear grid system provides the flexibility needed to represent irregular boundaries accurately which in turn can lead to increased modeling efficiency.

Subject Headings: Storm surges | Tides | Long waves | Wave propagation | Two-dimensional models | Geometry | Hydrodynamics | Water circulation

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