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Implicit Solver - Channel flooding

Hello,

I'm simulating a open channel network in sewergems using Implicit solver. In certain stretches, it shows the HGL is above the ground level and I was in the intention that it is flooding. Following is a sample figure.

But the post in the below link confused me.

https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/17596/what-happens-when-the-water-level-exceeds-the-top-elevation-of-an-open-channel

How can we find out whether the channel get flooded, isn't it , if HGL is above the GL of the channel segment? Is overflowing and flooding are two different conditions?

Regards

Nishadi

Parents
  • A distinction to be made is flooding vs. overflowing. As the article explains, the side walls of a channel are extended up so that flow is not lost (no overflow), but the program will still warn you that the channel is overtopped/flooded, so that you are aware that the channel's capacity has been exceeded and you may need to address the problem so that the actual channel in the real system does not overflow.


    Regards,

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

    Answer Verified By: Nishadi 

Reply
  • A distinction to be made is flooding vs. overflowing. As the article explains, the side walls of a channel are extended up so that flow is not lost (no overflow), but the program will still warn you that the channel is overtopped/flooded, so that you are aware that the channel's capacity has been exceeded and you may need to address the problem so that the actual channel in the real system does not overflow.


    Regards,

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

    Answer Verified By: Nishadi 

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