Abstract
A mathematical model was developed to predict the un-steady state two dimensional distribution of pollutant discharged from non-point and point sources to a natural water channel. The model was composed of the hydrodynamic and dispersion models.
A hydrodynamic model was formulated following Leendertes procedure and modified to be able to apply on un-steady state flow resulted from rainfall run-off. And the dispersion model derived according to Peaceman and Rachford nonlinear formulation was made considering two-dimensional movement of dissolved pollutant in meandering non-uniform river.
Hydrological concentration of the study area were examined on site where the longitudinal dispersion coefficient of fluid practicles was determined by measuring the peak dye concentration, for hydrodynamic model as well as dispersion model.
The computational procedures were tested on the study site of Seom-jin river, Korea. The result of the application of this model was analyzed and presented in this paper.
