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Weirs (SewerGEMS)

The problem is in the flow after the weir.In the model I have several weirs but two of them do not work properly.I run model in EPA SWMM solver.

Flow that comes to weir after rain reduced to dry weather, but after weir flow increase.The diagram shows that green curve(OVERFLOW) has a greater flow than the blue curve(INFLOW).What can cause this error?

Thanks,

With Regards,

Matija.

0 Offline Jesse Dringoli Thu, Apr 9 2015 8:57 AM
It sounds like the model may be unstable. Have you tried adjusting any of the calculation options, such as the Routing Time Step?

If this doesn't help, it may be best to provide a copy of the model files (.stsw and .stsw.sqlite if using the latest version.) There are two options for sharing your model files on Communities. If you would like the files to be visible to other members, compress the files into a zip file and upload them as an attachment using the ‘Advanced Reply editor’ before posting. If your data is confidential, you can follow the instructions in the link below to send it to us via Bentley Sharefile. Files uploaded to Sharefile can only be viewed by Bentley.

communities.bentley.com/.../7079.be-communities-secure-file-upload

Regards,

Jesse Dringoli
Technical Support Manager, OpenFlows
Bentley Communities Site Administrator
Bentley Systems, Inc.
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