Abstract
Numerical modeling of flow including the calculation of hydraulic transitions is a useful tool when planning river engineering works. The Flux Difference Splitting Scheme, FDS, has been developed to simulate flow with shock waves in numerous aerodynamic applications. FDS incorporates the theory of nonlinear characteristic waves and the concept of numerical flux. This method can also be applied to open channel flow, thus producing a robust algorithm capable of calculating flow at supercritical, subcritical, and transitional Froude numbers. In this paper, an FDS model for two-dimensional open channel flow is developed and applied to several different hydraulic conditions. Comparison of calculated results with theoretical and experimental results is favorable.
