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DTM of TownshipHydro2de 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 proven to be successful in a number of practical applications:
dam break simulations flood modelling surge waves and bores flows around obstacles / separations standing waves / hydraulic jumps flows in compound and braided channels transport of sediments and drift-material 


Velocity Vectors

Main Features

based 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

The depth-averaged shallow water equations describe the flow field over moderate slopes where the pressure distribution is approximately hydrostatic. A conservation form is used that remains valid in the presence of shocks (e.g. hydraulic jumps). The numerical method is based on an explicit cell-centred finite volume scheme (flux difference splitting according to Roe). The spatial accuracy is of 2nd order which allows for simulation of short waves or dam break waves with steep fronts. Lateral momentum transfer is considered with zero- and one-equation turbulence models.


Input / Output Features

generation 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

Platforms: Linux


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