1D Pumps: Difference between revisions
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=2D-2D Configuration=
Because pumps are zero length channels they do not create automatic nodes at the upstream and downstream end. If you ran the model with just a pump polyline and SX connection you will get <u>[[TUFLOW_Message_1353| ERROR 1353]]</u>. To remove this error, the most efficient schematisation is to digitise a 1d_nwk 'NODE' at the upstream and downstream end of the pump (no need for a separate 2d_bc SX layer).
#Type = "NODE". <br>
#Len_or_NA = The 'NODE' requires a nominal storage amount. This can be estimated from the pipe length and diameter attached to the pump. <br>
#US_Invert = The upper elevation of the automatically created NA table. Make sure these values are set higher than the expected water levels at the intake and outlet of the pump. <br>
#DS_Invert = The bottom elevation of the pump nodes. As the pump do not create automatic nodes, the bottom elevation of the pump nodes must be specified. Note that this does not change the intake or outlet elevations of the pump, but only sets the bottom elevation of the nodes for storing water. <br>
#Conn_1D_2D = Sets to "SX" to connect the 1D pump with the 2D domain. Without the SX connection, water will build up within the node and cause an instability. <br>
See the example below.<br>
[[File:1d_nwk_pump_SX_node.PNG|border|300px]] <br>▼
A simple 2D-2D pump configuration will look like the below schematisation. <br>
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