Revision as of 21:43, 3 July 2020 view source TuflowJoe (talk \| contribs) 281 edits No edit summary ← Older edit		Revision as of 01:30, 4 July 2020 view source Tuflowduncan (talk \| contribs) Bureaucrats, Administrators 1,210 edits →Introduction Newer edit →
Line 3: =Introduction= TUFLOW models can be configured to dynamically link to Flood Modeller by utilising a water level boundary to the 2D cells along the 1D/2D interface. In the 2D boundary condition (2d_bc) GIS layer, ~~we define~~ the location at which this link occurs is defined. The 2D water level applied at the 2D boundary cells is calculated in the 1D Flood Modeller component. The terminology used in TUFLOW is a '''HX''' type boundary on the 2D cells, with the '''H''' indicating that a '''H'''ead (water level) boundary is used and the '''X''' indicating the value is coming from an e'''X'''ternal model (in this case Flood Modeller). <br> Depending on the water level in the surrounding 2D cells, flow can either enter or leave the HX cells. The volume of water entering or leaving the 2D boundary is added or subtracted from the 1D Flood Modeller model to preserve volume. We must connect the HX lines to the 1D Flood Modeller model. This is done using CN type lines in the 2d_bc layer, where a CN line is connected to the HX line, the water level from the 1D Flood Modeller nodes is transferred to the HX line. In between 1D nodes, a linear interpolation of water level is applied. This is shown in the figure below.

1D-2D Flood Modeller-TUFLOW: Difference between revisions