I have a pump connected to a wet well and am graphing the pump flow and wet well hydraulic grade versus time. I'm seeing that the wet well's hydraulic grade is moving up and down several times while the pump is off. I'm not sure what is causing the grade line to change when I believe the only thing controlling it is the pump that is connected to it. I can understand the grade line to increase while the pump is not running but I don't see what would make it decrease. What else could be causing this?
Kyle, I suspect it may be due to the reporting timestep. The graphs may not be showing all the details of the calculated results.
I see that you tagged the post as SewerCAD - in the calculation options for the GVF-Convex solver, set the "reporting timestep type" to "<all>".
See: Wetwell level drops when pumps are off, or other unexpected results in graphs
Jesse DringoliTechnical Support Manager, OpenFlows ProductsBentley Communities Site AdministratorBentley Systems, Inc.
Answer Verified By: Sushma Choure
That is the issue. Thanks!