MODELING MATEMATIK ALIRAN DI SUNGAI DENGAN METODE BEDA HINGGA

Abstract

One way to identify the direction of dispersion pollutant in river and obtains result of research coming near in fact is by using mathematic model. Study from the model was finished by applying finite difference method, what in this case using the Leap frog finite difference method explicit. This is because the method is relatively easy to handle. To make the mathematic model structure besides applying finite difference method, basics law of stream hydrodynamics in river is also required which are equation of continuity and equation of motion or momentum. Without those two equations, scheme of Leap frog cannot be made. As numeric solution, to reach the success of mathematic modeling of flow in river by using the Leap frog finite difference method explicit, it also depends on ratio from scheme of time and space. In this case means the study of numeric stability from model have to be fulfilled by its conditions.