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FM Tute M02 MI Pipe Network: Difference between revisions

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=Method=
<li>Copy the GIS layers '''1d_nwk_FMT_M02_Pipes_0011d_nwk_FMT_M02_Pipes_001_L''' and '''1d_nwk_FMT_M02_Pits_0011d_nwk_FMT_M02_Pits_001_P''' within '''Module_data\Module_02\Pipe_Network''' into the '''TUFLOW\model\mi''' folder.
<li>Open the layer '''1d_nwk_FMT_M02_Pipes_0011d_nwk_FMT_M02_Pipes_001_L''' in MapInfo. This contains polylines representing the culverts that make up the pipe network.
<li>A number of the attributes within the '''1d_nwk_FMT_M02_Pipes_0011d_nwk_FMT_M02_Pipes_001_L''' layer have not been populated. Make the layer editable and add the following attributes to all objects leaving all other attributes unchanged. Make use of the ‘Update Column’ function in MapInfo to update all objects at the same time. <br>
Note that for attributes where the field type is a character (not a number), the text must be entered between speech marks. For example, to enter 'C' for the attribute 'type', ''"C"'' must be entered rather than simply ''C''. : <br>
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*The number of identical pipes in parallel. <br>
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<li>Open the layer '''1d_nwk_FMT_M02_Pits_0011d_nwk_FMT_M02_Pits_001_P''' in MapInfo. This contains digitised points that represent the pits of the pipe network through which water can transfer to and from the overlying floodplain.
<li>A number of the attributes within the '''1d_nwk_FMT_M02_Pits_0011d_nwk_FMT_M02_Pits_001_P''' layer have not been populated. Make the layer editable and add the following attributes to all objects leaving all other attributes unchanged. Again, make use of the ‘Update Column’ function in MapInfo to update all objects at the same time:
<br>
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*Specifying SXL for the ‘Conn_2D’ attribute automatically creates a 2D SX connection at the 2D cell within which the 1D pit is located. In addition, the ZC elevation of the cell will be lowered by the amount specified in the ‘US_Invert’ attribute (0.1m), and the upstream invert of the pit channel set to the lowered 2D cell elevation. This is useful to help trap the water into the pit as it flows overland in the 2D domain. <br>
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<li> Open the layer '''1d_x1d_FMT_M01_nwk_0011d_x1d_FMT_M01_nwk_001_P''' created in [[Flood_Modeller_Tutorial_Module01 | Flood Modeller Tutorial 1]]. Note that the pipe network has been digitised to outfall to the watercourse. We will manually specify the downstream invert levels of Pipe16 and Pipe18 as the discharge point of the pipe network is above the bed level of the watercourse. Use the Info tool and click on each pipe in turn and change the ‘DS_Invert’ attribute for both pipes from -99,999 to 38m.
<li>Save both '''1d_nwk_FMT_M02_Pipes_0011d_nwk_FMT_M02_Pipes_001_L''' and '''1d_nwk_FMT_M02_Pits_0011d_nwk_FMT_M02_Pits_001_P''' and export to MID/MIF format. </li><br>
<u>'''Pit Inlet Database'''</u>
<li>The Pit Inlet Database has been created and can be found within '''Module_data\Module_02\Pipe_Network'''. Copy the csv files '''pit_inlet_curves.csv''' and '''pit_inlet_dbase.csv'''’ into a new folder entitled '''pit_dbase''' within the TUFLOW folder.
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