Hi all,
I need to model a pump which feeds a reservoir in Hammer. The pumped water flows out from a pipe at a level which is higher than the water level of the reservoir (i.e. at atmospheric pressure). Is it correct to model it setting the “Elevation (Inlet/Outlet Invert)” parameter of the resevoir unit at a level higher than the “Elevation” parameter?
Or is it more correct to use a “discharge to atmosphere” valve?
Thanks for your help.
Hello Manfredi,
I would recommend using the Discharge To Atmosphere element to model this. This will allow the outflow to vary with pressure based on the orifice size of the opening to the atmosphere. More on this here:
Modeling Reference - Discharge To Atmosphere [TN]
With the reservoir approach, the "elevation" that you enter will always be used as a constant HGL boundary condition, and the inlet/outlet invert elevation simply allows the program to determine the pressure. See related article:
"Elevation" and "Elevation (inlet/outlet invert)" fields reservoir properties?
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.