Numerical Computation of Open Channel Flow with Shock Wave using FDS method

Abstract

Numerical calculation of flow including shock wave is one of the important tools in the practical river engineering works. Flux Difference Splitting, FDS, scheme is one of the numerical method to simulate the flow with shock wave. In this method, the theory of nonlinear characteristic wave and the concept of numerical flux are taken in account and it is very easy to be applied to various condition of open channel flow. In this paper, a numerical model using FDS scheme for two dimensional open channel flow is developed and was applied to several different hydraulic conditions. The calculated results are compared with the theoretical and experimental results and good agreement is obtained.