a new two dimensional model for pollutant transport in ajichai river

accurate prediction of pollution control and environmental protection need a good understanding of pollutant dynamics. numerical model techniques are important apparatus in this research area. so a 2500 line fortran 95 version code was conducted in which using approximate riemann solver, couples the shallow water and pollution transport agents in two dimensions by the aid of unstructured meshes. a multidimensional linear reconstruction technique and multidimensional slope limiter were implemented to achieve a second-order spatial accuracy. the courant number ruled as a control parameter for stability conditions and a third order runge-kutta method was performed for equation discretizations. for code verifications another author's case study was examined. the numerical results show that the model could accurately predict the flow dynamics and pollutant transport in ajichai river.