Dispersion in Two-Layer Stratified Water Bodies

Abstract
A finite element model is developed for the numerical prediction of the dispersion process in a strongly stratified water body idealized as a two-layer system. The physical processes of mixing through the density interface and horizontal dispersion are discussed. Numerical integration in time is based on an implicit iterative trapezoidal scheme. Results for one-dimensional counterflow conditions are verified with analytical solutions. Finally, the model is applied to a large dispersion experiment in Massachusetts Bay.

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