TUFLOW Output Discussion: Difference between revisions

In TUFLOW HPC, the cell averaged depth is used computationally and by default in the depth outputs (see below).

Water level outputs, however, assume that water fills from the bottom of the SGS cell’s storage curve. This water level result is recorded at the cell centre, interpolated to the cell corners, and then the gridded outputs are triangulated from these points (orange line). In sheet flow situations when the volume in that cell is small, the cell-centered water level may sit below the cell centreterrain (blue dot on diagram) if the cell is steep enough. This water level is still recorded at the cell centre and used to interpolate the mapped output (orange line). This can result in a water level results sitting below the DEM_Z, even when there is a positive depth result. Note this does not affect the simulation computationally, only how the water level results are output. <br>