Modeling Hydrodynamics of Real World Estuarine Systems

P. Paul, and V. Cvetkovic
Royal Institute of Technology (KTH), Stockholm, Sweden

Estuaries are a difficult hydrologic environment to represent with a numerical model because of the large number of contributing hydrologic processes, shallow hydraulic gradients, and variable-density flow conditions. Boundary conditions need to be identified at all boundaries to permit a solution of the governing equations.

This paper describes the development and application of the 2.5D estuarine dynamics model, designed specifically for the coastal wetland transition zone between inland freshwater systems and the estuarine system.

The hydrodynamic equations form a system of nonlinear partial differential equations for velocity, temperature and salinity fields, all set in complex geometry and bathymetry.