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Check Files 1d pit A: Difference between revisions

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| ID||The pit ID.
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| Type||The pit type, see TUFLOWthe <u>[https://docs.tuflow.com/classic-hpc/manual/latest/ TUFLOW Manual]</u> for a list of pit types.<br>
For example a "Q" stands Q pit, while a "Q(VPI)" type is a Virtual Pipe Inlet.
|-
| VP_Network_ID||Used Virtual Pipe Network ID (as an integer) used to determine which outlet(s) the flow into the inlet pits discharges from.
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| Inlet_Type||For a VPI or Q pit, the name of a pit inlet type in the Pit Inlet Database. Not used for other pits.
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| VP_Sur_Index||Only used for VPI pits if using the HPC solver. In the event that the total flow into the VPIs on the same VP_Network_ID exceeds the maximum outflow capacity (see Qmax below), one or more of the VPI flow rates must be modified. The VPIs with the lowest surcharge index are given priority.
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| VP_QMax||Only used for VPI and VPO if using the HPC solver:. For VPOs the maximum flow that can discharge back into the 2D domain. ForVPIsFor VPIs the maximum surcharge capacity or flow back on to the 2D domain. To prevent a VPI from surcharging enter a QMax of 0.0 (zero).
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| Width||For C pits the diameter of the pit cross-section in the vertical plane. For R and W pits, the width of the pit section in the vertical plane. For all pits the width is used to determine the number of 2D cells to connect.
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| Conn_2D||Used to control the connection type. For pits this field must be blank or set to “SX”. If set to blank, is treated as a SX connection. Other options maybe provided in the future.
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| Conn_No||Overwrite the automatically determined number of connected 2D cells.
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| Number_of||The number of pits.
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| Lag_Approach||Sets the lag approach. <br>
*'''None''' or blank: No lag is applied.
*'''Shift''': Shift method applied.
*'''Decay''': Decay method applied.
|-
| Lag_Value||Lag value in hours.
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| Invert||The elevation from the 2D cell the pit connects to or that entered via a 1d_nwk layer.
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| Q_factor||This is the multiplication factor applied to the discharge to allow for any blockage and/or if Number_of pits is greater than 1.
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| i_1d_layer||The integer index of the GIS layer that the pit came from. For example an '''i_1d_layer'''i_1d_nwk value of 4 would be the 4th input layer (1d_nwk_M08_pits_001) below.<br>
<font color="blue"><tt>Read GIS Pits </tt></font> <font color="red"><tt>==</tt></font><tt> mi\1d_nwk_M04_channels_001.MIF1d_nwk_M04_pits_001_P</tt><br>
<font color="blue"><tt>Read GIS Pits </tt></font> <font color="red"><tt>==</tt></font><tt> mi\1d_nwk_M05_bridge_001.MIF1d_nwk_M05_pits_001_P</tt><br>
<font color="blue"><tt>Read GIS Pits </tt></font> <font color="red"><tt>==</tt></font><tt> mi\1d_nwk_M07_trunk_998.MIF1d_nwk_M07_pits_998_P</tt><br>
<font color="blue"><tt>Read GIS Pits </tt></font> <font color="red"><tt>==</tt></font><tt> mi\1d_nwk_M08_pits_001.MIF1d_nwk_M08_pits_001_P</tt>
 
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