Mathematical Modeling of Three-Dimensional Coastal Currents and Sediment Dispersion: Model Development and Application

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Mathematical Modeling of Three-Dimensional Coastal Currents and Sediment Dispersion: Model Development and Application

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Sheng, Yea-Yi Peter

A comprehensive model of coastal currents and sediment dispersion has been formulated and applied to the Mississippi Sound and adjacent continental shelf waters. The study combines mathematical modeling of various hydrodynamic and sedimentary processes with laboratory and field experiments. Of primary importance is the development of an efficient and comprehensive three-dimensional, finite-difference model of Coastal, Estuarine, and Lake Currents (CELC3D). The model resolves currents driven by tide, wind, and, density gradient. It has been applied to the Mississippi Sound, and results agree well with measured surface displacements and currents during two episodes. Rates of entrainment and deposition of the Mississippi Sound sediments have been studied in a laboratory flume. Effects of (1) bottom shear stress, (2) bed properties, (3) salinity of water, and (4) sediment type on the erodability of sediments have been examined. Results of the laboratory study have been incorporated into the bottom boundary conditions for a three-dimensional sediment dispersion model. Gravitational settling and particle size distribution of the Mississippi Sound sediments were also studied in laboratories. Bottom boundary layer dynamics and wave effect on sediment dispersion have been studied by means of a turbulent transport model and a wave model. Model simulations of sediment dispersion in the Mississippi Sound agree well with available data from ship surveys. NOTE: This file is large. Allow your browser several minutes to download the file.

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Title :

Mathematical Modeling of Three-Dimensional Coastal Currents and Sediment Dispersion: Model Development and Application

Contributors:

Sheng, Yea-Yi Peter (author) / Field Verification Program (U.S.) (editor) / Coastal Flooding and Storm Verification Program (U.S.) (editor) / Hydraulics Laboratory (U.S.) (editor) / Aeronautical Research Associates of Princeton. (editor)

Published in:

Technical Report ; TR-CERC-83-2

Publication date :

1983

Size :

45272694

Type of media :

Report

Type of material :

Electronic Resource

Language :

English