1D Pumps: Difference between revisions

The depth discharge database is set up in the same way as a pit inlet database, see 4.5.1.2 in the TUFLOW manual <font color="majenta"><tt>(Amend this section link once the manual is finalised)</tt></font><tt>.</tt>. Each pump ‘Inlet_type’ must reference a name within the depth discharge database, otherwise [[TUFLOW_Message_1118 | <font color="red"><tt>ERROR 1118 - Could not find pit inlet type ",a," in the pit inlet database</tt></font><tt></tt>]] will appear because TUFLOW will use the ‘ID’ field instead of the blank ‘Inlet_type’ field to search the database and it will come up with no information <font color="majenta"><tt>(that seemed to be the case during my testing)</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 <font color="majenta"><tt>(? Is that true)</tt></font><tt>.</tt> Without information in the Area(m2) or Width(m) columns in the depth discharge database <font color="red"><tt>Error 1092</tt></font><tt></tt> and <font color="red"><tt>Error 1093</tt></font><tt></tt> will appear. <br>

==Pump Curve==

The performance of pumps is a function of suction head at the inlet and the level of the discharge location. The resultant total head between the water level at the inlet and outlet is what determines the flow rate through the pump. If the suction level is low the pump will need to provide more energy in the form of pressure to maintain the water elevation at the outlet, the opposite is also true if the water depth at the pump inlet is high. <br>