Dear All,
I'm modelling a network feeded by a pumping station with 3 pumps.
when using the combination pump curve, I see the graph as you see here with extreme negative and positive head:
by checking the results, I see that there are no negative heads in my network. So I wonder why the graphic is drawn in this way? Could you please explain? I try to share my files in private way. I would be grateful if you check from your side too.
Many thanks in advance,
Kind regards,
Gashin
Gashin,
I suspect that this may be a closed system (no downstream storage). If that is the case, an accurate system head curve cannot be generated because the flow cannot be varied (it will always be only the sum of the downstream demands). This situation and some possible options for you are explained in the following article from our Wiki: System head curves with no downstream storage
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.
Answer Verified By: Sushma Choure