TUFLOW Remapping: Difference between revisions
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'''Figure 6 Water level output and remapped water depth in a river flood model.'''<br><br>
=Remap Other Output Grids=
The utility can also remap extra grid files (e.g. a hazard output) to the resolution of the DEM file. <>
write (*, '(" The values of lowers_hazard.asc are refined and extended/reduced to the dry/wet extent")')
write (*, '(" of the high resolution water depth remapping result. Note that no interpolation is applied
Selection of a 1D timestep that is too large can cause instability. The TUFLOW manual includes some discussion on 1D timestep selection and courant number criterion. Conceptually a 1D timestep should be chosen to ensure a volume of water does not travel a distance longer than the shortest 1D channel within a model. For example, if the flow velocity and celerity is 5m/s and the 1D channel length is 10 metres, the 1D timestep should be less than 2 seconds. To provide some tolerance for faster flows associated with different flood events, a timestep of 1 second may be appropriate.
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