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Negative flows

Hi,

 

Any guess why I am getting negative flow rates for the Link R14 at 00:15:00 minutes?

Find attached the input file.

 

I can't recognize what is the exact reason to get negative flows, where the minimum should be 0 m3/s,  even without a flap gate.

 

Thanks alot

 

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Replies

  • Hi, Basically the flow goes into the storage nodes of your model and then flow over the weir to the non outfall nodes J14 etc.  Later in the simulation the flow comes out of the nodes J14 etc. back over the weir and you get your negative flow.  I am using SWMM 5.0.021.
    • Hi, thanks a lot for the detailed explanation. Now I got it and I understood the facts. Thanks again...
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