DIKE-BREAK INDUCED FLOOD WAVE PROPAGATION

摘要

This paper presents comparisons of experimental data to results of numerical computations of a dike-break induced flow. A physical model was constructed taking into account the special boundary conditions of that type of flow. Water levels and velocities were recorded continuously by an advanced measuring system providing high frequencies and stability towards dynamically changing water levels. With respect to the numerical simulation a TVD Runge Kutta discontinuous Galerkin finite element method for two-dimensional depth-averaged shallow water equations is used. It is validated by means of the measuring data which confirm the accuracy, convergence and general applicability of the method on dike-break type problems. However, improvement opportunities are identified and discussed in a weak-point analysis.