Three-Dimensional Modeling of Pollutant Transport

by A. K. M. Quamrul Ahsan, Stevens Inst of Technology, United States,
Michael S. Bruno, Stevens Inst of Technology, United States,



Document Type: Proceeding Paper

Part of: Estuarine and Coastal Modeling

Abstract:

A numerical model for pollutant transport in coastal waters has been developed in x-y-z-t space. The simplicity of a fixed Eulerian mesh and a computationally efficient Lagrangian approach has led to the adoption of a combined, Eulerian-Lagrangian model. The conventional transport equation is decoupled into the advective and diffusive components. The former component is solved by the method of characteristics with a higher order Hermite tricubic interpolation scheme and the latter component is solved by a Crank-Nicholson implicit finite difference scheme on a fixed Eulerian grid system. In order to demonstrate the superior performance of the scheme the propagation characteristics of the model are analyzed.

Subject Headings: Three-dimensional models | Numerical models | Water pollution | Mathematical models | Sediment transport | Contaminant transport | Water supply systems

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