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Convergence Experiments with a Hydrodynamic Model of Port Royal Sound, South Carolina

by J. K. Lee, US Geological Survey, United States,
R. W. Schaffranek, US Geological Survey, United States,
R. A. Baltzer, US Geological Survey, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

A two-demensional, depth-averaged, finite-difference, flow/transport model, SIM2D, is being used to simulate tidal circulation and transport in the Port Royal Sound, South Carolina, estuarine system. Models of a subregion of the Port Royal Sound system have been derived from an earlier-developed model of the entire system having a grid size of 600 ft. The submodels were implemented with grid sizes of 600, 300, and 150 ft in order to determine the effects of changes in grid size on computed flows in the subregion, which is characterized by narrow channels and extensive tidal flats that flood and dewater with each rise and fall of the tide. Tidal amplitudes changes less than 5 percent as the grid size was decreased. Simulations were performed with the 300-foot submodel for time steps of 60, 30, and 15 s. Study results are discussed.

Subject Headings: Tides | Ports and harbors | Grid systems | Water circulation | Simulation models | Estuaries | Water supply systems | South Carolina | United States

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