View source for TUFLOW CATCH Tutorial M03 Check Files QGIS

==Introduction==
Review the transfer between the HPC and the FV domains. Review the TUFLOW FV nodestring and mesh check files. 

==Review HPC Transfer Check Files==
Review the transfer from the HPC model domain into the FV model domain:
<ol>
<li> In Windows File Explorer, navigate to the '''TUFLOWCATCH\check''' folder and drag and drop '''TC03_001_catchment_hydraulic_hpc_transfer_R.shp''' and '''TC03_001_catchment_hydraulic_grd_check_R.shp''' into QGIS.
<li> Click on the 'Apply TUFLOW Styles to Open Layers' symbol from the TUFLOW Plugin toolbar.
<li> The _hpc_transfer_R is the cells where the HPC transfers into the FV model mesh. <br>
<br>
{{Video|name=animation_TC3_check_01a.mp4|width=1236}}<br>
</ol>

==Review TUFLOW FV Check Files==
Open the following check files from the '''TUFLOWCATCH\check''' folder into QGIS:
:*'''TC03_001_receiving_mesh_check_R.shp'''
:*'''TC03_001_receiving_ns_check_L.shp'''

Review the TUFLOW FV model mesh:
<ol>
<li>Click on the 'Apply TUFLOW Styles to Open Layers' symbol from the TUFLOW Plugin toolbar. 
<li>The _receiving_mesh_check_R represents the final mesh defined by the '''Stream_Mesh.2dm''' and any other modifications (i.e the downstream culvert). For each cell, it contains:
* '''IDX2''' and '''IDX3''': The cell 2D and 3D ID number. As this is an only 2D model, the IDX3 is set to the IDX2 attribute.
* '''CTRDX''' and '''CTRDY''': The X and Y coordinates of the cell center.
* '''Mat''': The material ID applied in the cell.
* '''ZB''': The elevation of the cell center.
* '''BRough''': The bed roughness (Manning's n) value of the cell.<br>
'''Note:''' Refer to the <u>[https://fvwiki.tuflow.com/Check_Files_mesh_check_R TUFLOW FV Wiki - mesh_check_R]</u> for more details.
<li>The _receiving_mesh_check_R is generally used to check the elevations of the mesh match the model bathymetry (the DEM). Use the 'Identify Features' tool to review the 'ZB' values: <br>
<br>
{{Video|name=animation_TC3_check_02a.mp4|width=1236}}<br>
</ol>

Review the boundary and culvert nodestrings:
<ol>
<li> The _receiving_ns_check_L is the nodestrings defined by the 2d_ns layers. Zoom in to the downstream culvert. Observe that the nodestrings have snapped along the closest mesh lines.<br>
'''Note:''' Refer to the <u>[https://fvwiki.tuflow.com/Check_Files_ns_check_L TUFLOW FV Wiki - ns_check_L]</u> for more details.<br>
<br>
{{Video|name=animation_TC3_check_03a.mp4|width=1236}}<br>
</ol>

==Review TUFLOW CATCH Check Files==
Review the catchment boundary:
<ol>
<li> In Windows File Explorer, navigate to the '''TUFLOWCATCH\check''' folder and drag and drop '''TC03_001_catchment_hydraulic_nodestrings_R.shp''' into QGIS.
<li>Zoom in to the upstream boundary. The _catchment_hydraulic_nodestrings is the TUFLOW HPC cell(s) selected by the catchment boundary nodestring. This boundary differs from the non-catchment boundary ('''2d_ns_TC03_DS_boundary_001_L''') in that momentum is transferred from TUFLOW HPC to TUFLOW FV. As such, these are well suited to head of estuary or other tributary inflows.<br>
<br>
{{Video|name=animation_TC3_check_04a.mp4|width=1236}}<br>
</ol>

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