Flood Modeller Tutorial Module02: Difference between revisions

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=Introduction=
In this tutorial we will add a representation of a proposed development which involves adding TUFLOW 1D pipe network elements into the existing model network to represent the drainage network, which will then be linked with Flood Modeller Pro.<br>
 
This will involve:
<li> Delete the 1D Domain commands (shown below) from the tcf. These commands should be moved to the ecf. This an optional step. <br>
*Modification of the floodplain topography by the creation of a 3D TIN surface;
*Revising the land use;
*The addition of pipes and pits to represent an underground drainage network;
*Linking the pipe network to Flood Modeller; and
*The addition of an inflow into the pipe network.
 
=GIS Inputs=
<font color="green"><tt>!1D DOMAIN COMMANDS </tt></font>
The steps necessary to modify each of the GIS inputs are demonstrated in MapInfo, ArcGIS and QGIS. At each stage please select your GIS package to view relevant instructions.
:<font color="blue"><tt>Start 1D Domain </tt></font> <font color="green"><tt>! Indicates the start of a block of 1D or ecf (Estry Control File) commands </tt></font> <br>
 
:<font color="blue"><tt>Output Folder </tt></font> <font color="red"><tt>== </tt></font> ..\results\M02\1d <font color="green"><tt>! Specifies the location of the 1D output files </tt></font>
==Define Elevations (Building a TIN)==
:<font color="blue"><tt>Write Check Files </tt></font> <font color="red"><tt>== </tt></font> ..\check\1d\ <font color="green"><tt>! Specifies the location of the 1D check files and prefixes them with the .tcf filename </tt></font>
 
:<font color="blue"><tt>Output Interval (s) </tt></font> <font color="red"><tt>== </tt></font> 180 <font color="green"><tt>! Writes the 1D output every 3 minutes. Note the (s) is required to indicate the value is in seconds </tt></font>
We have provided the GIS layers necessary to modify the ground elevations to represent the proposed development. This part of the tutorial will demonstrate how a TIN is created from these GIS layers. We will also update the GIS defining the road crest level. Follow the instructions below for your preferred GIS package
:<font color="blue"><tt>Timestep </tt></font> <font color="red"><tt>== </tt></font> 0.75 <font color="green"><tt>! Specifies a 1D computational timestep of 0.75 seconds. We will set the 1D timestep to be half the 2D timestep</tt></font>
:<font color="blue"><tt>Read GIS Network </tt></font> <font color="red"><tt>== </tt></font> ..\model\gis\1d_nwk_M02_culverts_001_L.shp <font color="green"><tt>! Reads the 1d_nwk GIS layer defining culverts within the model</tt></font>
:<font color="blue"><tt>Read GIS Network</tt></font> <font color="red"><tt>== </tt></font>..\model\gis\1d_nwk_M02_culverts_001_P.shp <font color="green"><tt>! Reads the 1d_nwk GIS layer defining nodes used to create automatic SX 1D/2D boundaries</tt></font>
<font color="blue"><tt>End 1D Domain</tt></font> </li>