Hello
How can I model gravity water distribution network using WaterGEM? The source is spring which is at highest level than the proposed location for storage tank. How can I enter the outflow from the reservoir!
Are you trying to control the flow out of the spring (reservoir) with some type of appurtenance device? If not all you would do is use the reservoir element and enter the HGL for the source. It's also pertinent to point out that WaterGEMS is only design to model pressurized water distribution and it's assumed that the pipes are always pressurized. It might also help you to know that WaterGEMS is a demand driven software, so the flow out of the spring would be based on the demands in the system at a given point in time.
Mark
Mark can you share me the snapshots for entering HGL for the source
I mean the steps of entering HGL for source
The source HGL is the "Elevation" field in the reservoir properties. Double click the reservoir to open the properties, then enter the HGL in the Elevation field in the Property Grid. This acts as a boundary condition for the model. Meaning, it assumes the HGL at that location is at the value you enter, and it solves everything else around that. You will need to enter the demands at your nodes downstream, and the pressure and other results will be calculated based on that boundary HGL, headloss in the pipes from the demanded flow, and any other constraints placed on the model such as controls, valves and other boundary conditions.
I would recommend our book Advanced Water Distribution Modeling and Management, which covers concepts like this.
If you are new to WaterGEMS, take a look at the resources here: Learning Resource Guide for new users of Bentley WaterGEMS and WaterCAD
This article may also be of interest: Modeling Fixed Inflow from a Marginal Source
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.
Answer Verified By: Sushma Choure