DIVERSION MODELING

Hamid,

Have you tried using the start control structure feature to model the weir?

Regards,
Mark

yes, but how can I lay out/connect the diversion from the weir?

Hamid,

Could you share how you attempted to model this with the start control structure with the Implicit solver, so we can understand the challenges you may have faced?” Knowing this might help us create a wiki article that helps other users.

Mark

Thanks Mark

As the following capture shows, I am going to lay out a diversion channel from the weir to the river .

I want to have a side weir, 20m away of the manhole with crest elevation 5.5 and length 3m.

when flow is more than 100 cms I want to be discharge to the river by the side slope.

Note that I have a pattern flow in the manhole and sometimes it will be more than 100 cms.

 

Thanks

Hamid

In your screenshot, it looks like the channel has not been connected to the "river" outfall. Did you encounter a problem when attempting to connect a conduit with a start control structure?

Hi Jesse
I didn't connect because I didn't know how can I model the blue channel. in reality the blue channel is 20 m far from the manhole, so can I connect the blue channel to the manhole and add a control structure in the blue channel?

Thanks

Hamid

Hamid,

Have you tried using the channel element and then connecting it with a cross section to your other channel element that is going to your treatment plants? What I envisioned your model looking like based on your first screen capture is something like this:

Just make sure to connect the channel at about 20 meters from the manhole. You can do this by making the channel to the left of the manhole and the right of the cross section that connects to the diversion channel a user defined length of 20 meters.

Also based on what you stated about your weir control structure not receiving flow until the flow in the weir is 100 gpm you might want to consider using depth-flow control structure type instead of the side weir. The depth flow control structure type will allow you to enter a table of depth vs. flow in the diversion channel.

Regards,

Mark 

Hamid,

Have you tried using the channel element and then connecting it with a cross section to your other channel element that is going to your treatment plants? What I envisioned your model looking like based on your first screen capture is something like this:

Just make sure to connect the channel at about 20 meters from the manhole. You can do this by making the channel to the left of the manhole and the right of the cross section that connects to the diversion channel a user defined length of 20 meters.

Also based on what you stated about your weir control structure not receiving flow until the flow in the weir is 100 gpm you might want to consider using depth-flow control structure type instead of the side weir. The depth flow control structure type will allow you to enter a table of depth vs. flow in the diversion channel.

Regards,

Mark