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1D Pumps: Difference between revisions

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=Pump Attributes=
A pump needs to first be digitised in a 1d_nwke layer. The direction of the polyline must go from inlet to outlet as a pump is unidirectional (see Section 5.9.2.1 Pumps). The attributes required for a pump in your 1d_nwk layer can be found withinin the 2018<u>[https://docs.tuflow.com/classic-hpc/manual/latest/ TUFLOW manualManual]</u>.<br>
In the 1d_nwk layer, the following attributes are required:<br>
#ID = ID of the pump channel. <br>
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=2D-2D Configuration=
BecauseAs 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| <font color="red"><tt>ERROR 1353 - No NA data for Node]]</tt></font><ttu>.</tt>]] 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). TheUnlike 'NODE'NODEs requiresconnected ato nominalpipes storageand amount in the “Len_or_NA” attributechannels, inNODEs addition infill 'SX' into the "Conn_1D_2D" attributeconnected to connectzero thelength 1dpumps pump torequire the 2Dfollowing domain. SX connections are required at connections to 2D domains to transfer water from the 1D node to the 2D. Without the SX connection, water will build up within the node and cause an instability. See the example below.attributes:<br>
#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 does 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 = Set to "SX" to connect the 1D pump with the 2D domain. Without the SX connection, water will build up within the node and cause instabilities. <br>
 
See the example below.<br>
[[File:1d_nwk_pump_SX_node.PNG|border|300px]] <br>▼
 
▲[[File:1d_nwk_pump_SX_node.PNGpng|border|300px600px]] <br>
 
A simple 2D-2D pump configuration will look like the below schematisation. <br>
 
[[File:Pump_schematic.PNG|border|600px]] <br>
 
=1D-2D Configuration=
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=Estry Control File Setup=
Within the *.ecf the following commands and files are at a minimum required to run a pump with no logicallylogical controlcontrols:<br>
<font color="blue"><tt>Read GIS Network</tt></font> <font color="red"><tt>==</tt></font><tt>..\model\mi\1d_nwke_xxxxx.MIF</tt><br>
<font color="blue"><tt>Depth Discharge Database</tt></font> <font color="red"><tt>==</tt></font><tt>..\bc_dbase\xxxxx.csv</tt><br>
If you do not specify a Depth-Discharge database then you will be faced with <font color="red"u><tt>ERROR[[TUFLOW Message 1118 –| CouldERROR not find a y-Q curve1118]]</tt></font><ttu>.</tt><br>
 
=TUFLOW Operating Control File (.TOC)=
For guidance on setting up the operating controls for pumps, seerefer sectionto 5the <u>[https://docs.9tuflow. in the com/classic-hpc/manual/latest/ TUFLOW Manual]</u>. <br>
 
.ecf command required: <br>
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=Depth Discharge Database=
The depth discharge database is set up in the same way as a pit inlet database, see(refer 5.12.4 into the <u>[https://docs.tuflow.com/classic-hpc/manual/latest/ TUFLOW manualManual]</u>). Each pump ‘Inlet_type’ must reference a name within the depth discharge database, otherwise <u>[[TUFLOW_Message_1118 | <font color="red"><tt>ERROR 1118]]</u> - Could not find pit inlet type ",a," in the pit inlet database</tt></font><tt></tt>]]. The ‘Area (m2)’ column is the area of the pump offtake and ‘Width (m)’ column is the width of the pump offtake. Without information in the Area(m2) or Width(m) columns in the depth discharge database <fontu>[[TUFLOW color="red"><tt>ErrorMessage 1092|ERROR 1092]]</tt></font><tt></ttu> and <font color="red"u><tt>Error[[TUFLOW Message 1093|ERROR 1093]]</tt></font><tt></ttu> will appear. <br>
==Pump Curve==
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