Hello everybody,
I tryed to include tidal conditions into my model but i didn´t got manhole overflowings? The freeboard high is negativ an the hydraulic grade ist higher than the elevation ground.
Were is my default? Thanks for helping
Additionally, check if your manholes have a bolted cover. If so, they can pressurize and the HGL can rise above the rim elevation without overflow. If they do not have a bolted cover and you are using the Implicit numerical solver in SewerGEMS, overflow due to backwater/tailwater can be ignored in favor of stability. See the following article from our Wiki: Zero overflow at manhole despite HGL above rim.
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.