This is in WaterCAD CONNECT Edition. My question stems from an issue with a tank in my model keeps overflowing during EPS run (fills up, remains full, doesn't drain). I believe I have identified the hydraulic grade is being supplied by a certain pump. I turned the pump off, but when I graph the pump discharge hydraulic grade and the hydraulic grade of a junction just outside the tank, they match up perfectly (see screenshot below). And this hydraulic grade is enough to overflow the tank. There are 3 other tanks in the model with higher max levels, but none should be able to be filling the problem tank due to valves or pipe connectivity.
I will upload the model files using the Secure File Upload right after posting this question. The tank in question is T-1, the pump in question is PMP-16T_588, the junction right outside the tank is J-3275. To replicate results, run the 'EPS Run' scenario and graph the components in question.
Jose, thanks for sending the model.
The flow into T-1 comes from two paths, one has 103 gpm and the other has 51 gpm. The pipe supplying 103 gpm can be traced back to two sources: T-CASAMERO and RES-1 (and PMP-NEW_WELL which is on). The pipe supplying the 51 gpm can be traced back to RES-1. It can be difficult to trace this due to some parallel piping but you can also use the Trace Upstream query on T-1 in Network Navigator (use the highlight button to highlight the paths in blue) to see this. You can also then make a few profiles to see it.
PMP-16T_588 is not adding energy to the system; you can see that the calculated status is "Off" and the calculated head and flow are zero. The downstream hydraulic grade happens to be higher than the upstream hydraulic grade, because of the head supplied by PMP-NEW_WELL (pumping out of RES-1). If you believe that those two other sources should not be connected to T-1, you may need to double check the connectivity and pipe/valve open/closed status. (again the Network Navigator queries can help with this)
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.
Thank you, Jesse. I was not aware of those trace tools, very helpful! I see now that PMP-NEW_WELL is supplying the hydraulic grade and overflowing T-1.