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Tutorial M10 003 GIS Inputs QGIS: Difference between revisions

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= Method =
Navigate to the '''Module_10\Tutorial_Data''' folder. Copy and save all the below layers into the '''Module_10\TUFLOW\model\gis''' folder:
:*'''1d_nwk_M10_piping_003_L'''
:*'''1d_nwk_M10_dambreak_003_L'''
:*'''2d_bc_M10_piping_dambreak_003_L'''
 
Investigate the supplied files:
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:*Drag and drop the .shp files into the QGIS workspace; or
:*Select Layer > Add layer > Add Vector Layer and navigate to the '''Module_10\TUFLOW\model\gis''' folder.
<li>The '''1d_nwk_M10_piping_003_L''' layer represents piping through the dam wall:
:*ID = Unique Channel ID.
:*Type = 'PF'.
:*n_nF_Cd = '0.015'.
:*US_Invert = Inlet elevation of the piping.
:*DS_Invert = Outlet elevation of the piping.
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:*Height_or_WF = Height of the piping orifice when fully breached.<br>
<br>
{{Video|name=Animation_M10_003_GIS_01h.mp4|width=1223}}<br>
[[File:Animation M10 003 GIS 01h.gif]]<br>
<br>
<li>The '''1d_nwk_M10_dambreak_003_L''' layer represents a 1D operational channel to model dam break in 1D:
:*ID = Unique Channel ID.
:*Type = 'DF'.
:*n_nF_Cd = '0.015'.
:*US_Invert = Elevation of the dam crest level before failure.
:*Inlet_Type = Refers to the Dam Failure operational control definition in .toc file.
:*Width_or_Dia = Top width of the dam failure channel.
:*Height_or_WF = Weir coefficient Cd of the intact part.<br>
See Section 25.210.18 of the <u>[https://downloadsdocs.tuflow.com/TUFLOWclassic-hpc/Releasesmanual/2020-10latest/ TUFLOW%20Release%20Notes.2020-10-AD.pdf Release NotesManual]</u> for more information on the attributes.<br>
<br>
{{Video|name=Animation_M10_003_GIS_02h.mp4|width=1223}}<br>
[[File:Animation M10 003 GIS 02h.gif]]<br>
<br>
 
<li>The 2d_bc layer uses SX type connection to link 1D elements into the 2D domain. It removes water out of the upstream cell(s) and deposits water back at the downstream cell(s). The line SX links need a CN (connection) line snapped from the upstream and downstream vertex of the 1D network line to the SX boundary. The length of the SX line is sufficient to match the width of the DF channel: <br>
<li>It is recommended to have a grd_check file from a previous run (with the same model cell size) turned on when digitising SX lines as the number of cells selected must correspond to the dimensions of the 1D structure. In this module, the 'Top Width Fully Breached' specified in the TOC is 25m, therefore 5 cells are selected:<br>
<br>
[[File:{{Video|name=Animation M10 003 GIS 03h03i.gif]]mp4|width=1223}}<br>
<br>
</ol>
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