FM Tute M01 MI 1D2D Code: Difference between revisions
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=Method=
<li>Import in an empty <br>2d_bc_empty.TAB</b> layer from within the TUFLOW\model\mi\empty folder and save as
<li>Open the <b>Inactive_area.TAB</b> GIS layer from Module_Data\Module_01\mi folder. Select all objects from within this layer, copy and paste into
<li> For all polygons assign a 'type' attribute of 'CD'. A 2D BC type of 'CD' designates the digitised polygon as a code polygon. The code polygon defines if the 2D cells are active or inactive </li>
<li> For all polygons assign a 'f' attribute of '-1'. A cell code of '-1' deactivates all cells within the digitised code polygons. </li>
[[File:FMT QGIS 1D2D Code attribute.JPG|800px]]
<li> Observe how the code polygon has been digitised between FC01.35 and FC01.34. The polygon covers the area between these two Flood Modeller nodes. This is because overtopping of the embankmentat this location has been represented in the 1D Flood Modeller component of the model.</li>
[[File:FMT QGIS 1D2D Code Polygon Digitisation.JPG|500px]]
<li> Observe how the code polygon has been digitised downstream of FC01.11. In this case, no code polygon has been defined over the embankment. This is because overtopping of the embankment will be modelled in the 2D TUFLOW component of the model. This is why there are additional HX boundary polylines at the upstream and downstream faces of the embankment. ▼
▲<li> Observe how the code polygon has been digitised downstream of FC01.11. In this case, no code polygon has been defined over the embankment. This is because overtopping of the embankment will be modelled in the 2D TUFLOW component of the model. This is why there are additional HX boundary polylines at the upstream and downstream faces of the embankment.</li>
[[File:FMT QGIS 1D2D Code Bank Digitasation.JPG|600px]]
<li>Save the file</li>
Please return to the [[Flood_Modeller_Tutorial_Module01#Modify_Simulation_Control_Files|Flood Modeller Tutorial Model]].
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