Hydro2de is a grid based flow model for the simulation of two-dimensional free surface flows. It lets you exploit the full information of topographical data. Thus it is an ideal complement to a Digital-Terrain-Model (DTM). The program has modules for the generation of input files, advanced graphical output routines and it can be used in combination with Geographical Information Systems (GIS).
Hydro2de has been
be successful in a number of practical applications:
Main Featuresbased on the shallow water equations in conservation form
numerically stable in the presence of steep slopes (sub- and supercritical flow, hydraulic jumps)
models wetting and drying process (allowing dry starts and moveable boundaries)
animated graphical output for intuitive analysis of complex flows
equations describe the flow field over moderate slopes where the
distribution is approximately hydrostatic. A conservation form is used
that remains valid in the presence of shocks (e.g. hydraulic jumps).
numerical method is based on an explicit cell-centred finite volume
(flux difference splitting according to Roe). The spatial accuracy is
2nd order which allows for simulation of short waves or dam break waves
with steep fronts. Lateral momentum transfer is considered with zero-
one-equation turbulence models.
Input / Output Featuresgeneration of calculation grid with Fluviz xy-plots and vectors contourlines and -plots (b/w, coloured) animated graphics (vectors, contours, 3d) drivers for X11, PostScript ASCII tables hydrographs and statistical functions interface to GIS DXF and ArcGenerate hardcopy