Author(s): Wei Zhang; Wolfgang Summer
Linked Author(s): Wei Zhang
Keywords: Surge waves; Dam-break waves and numerical simulation
Abstract: Computer programs for the simulation of unsteady open channel flows are becoming increasingly available and practical. One of them is FLORIS (Flood-Routing River Systems), developed by the Federal Technical University of Zurich. It is based on the one-dimensional Saint Venant equations, and numerically solved by a box implicit difference method (IDM) and an implicit method of characteristics (IMOC). The most attracting feature of the program FLORIS is that subcritical and supercritical mixed flows can be implicitly computed by the IMOC built in the program. In this paper, FLORIS was applied to compute a surge wave and a dam-break wave, and compared with field experiment and physical model. The comparison between numerical solutions and experiment data is satisfactory, and this also verifies the applicability of FLORIS to simulate rapidly varied unsteady flows in irregular and nonprismatic channels.
Year: 1999