All Forums

Sewer network analysis with River stage changes

Posted by Geethani Jayakody on September 8, 2011 at 8:52am

I want to model a combined sewer network which is connected to a river through a flap gate. What will be the best way to input rover with the flap gate? Outfall or Outlet?

Is it possible to analyze the network with river stage changes dynamically rather inserting river level changes as predefined boundary conditions

 

Thanks

Geethani

You need to be a member of SWMM 5 or SWMM or EPASWMM and SWMM5 in ICM_SWMM to add comments!

Join SWMM 5 or SWMM or EPASWMM and SWMM5 in ICM_SWMM

Email me when people reply –
Follow

Replies

  • Robert Dickinson September 13, 2011 at 7:50am
    I should also mention that the boundary time series conditions do propagate upstream during a simulation.
  • Geethani Jayakody September 13, 2011 at 7:40am

    Thanks Robert. It worked with Flapgate (Outlet) and Outfall with time series boundary conditions. I am trying to set boundary conditions calculated through the model because with CSO, river levels are changed and those changing river levels will be boundary conditions with time.

    Geethani

    Robert Dickinson said:

    There is a flap gate headloss in SWMM 5 for a Weir

     

    // --- compute head loss from gate     

    //      apply ARMCO adjustment for headloss from flap gate  

    hLoss = (4.0 / GRAVITY) * veloc * veloc * exp(-1.15 * veloc / sqrt(head) )

  • Robert Dickinson September 8, 2011 at 7:05pm

    Regarding this question "Is it possible to analyze the network with river stage changes dynamically rather inserting river level changes as predefined boundary conditions"

     

    You can have many outfall river boundary conditions in the network - as the boundary condition changes the flows and heads in the upstream links and nodes will  also change

     

    3293137761?profile=RESIZE_1024x1024

  • Robert Dickinson September 8, 2011 at 6:59pm

    There is a flap gate headloss in SWMM 5 for a Weir

     

    // --- compute head loss from gate     

    //      apply ARMCO adjustment for headloss from flap gate  

    hLoss = (4.0 / GRAVITY) * veloc * veloc * exp(-1.15 * veloc / sqrt(head) )

This reply was deleted.