WIT Press


Evaluating The Implementation Of Shallow Water Equations Within Numerical Models Focusing The Propagation Of Dambreak Waves

Price

Free (open access)

Paper DOI

10.2495/CMEM010221

Volume

30

Pages

10

Published

2001

Size

951 kb

Author(s)

R. Liem, J. Schramm, J. Kongeter

Abstract

Evaluating the implementation of shallow water equations within numerical models focusing the propagation of dambreak waves R. Liem, J. Schramm & J. Kongeter Institute of Hydraulic Engineering and Water Resources Management (IWW), Aachen, Germany Abstract Specifically flow conditions during the initial stage of a dambreak wave differ from shallow water equations (SWE), which are usually applied as the basic physical equations in numerical simulations on dambreak waves. To quantify the deviation of shallow water equations from the actual dambreak wave's propagation, experiments are conducted using a High-Speed-Measuring-System providing frequencies up to 4500 frames/sec. In particular front positions and front velocities are observed from the digital recordings. Since it has been shown that varying numerical methods can cause different computational results, numerical test series have also been carried out considering a finite element and a finite volume approach as well as d

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