Merging of two open channels into one

[Ktracid]

Hi all,

I have a problem where two open channel flows are merging into one. I have all the required information of the two inlet channels (i.e. dimension, flow depth, velocity, etc.) and am interested in obtaining the head and velocity of the outlet channel. Does anybody have any tips for a case like this? Can I say that the energy grade line (EGL)of the outlet channel is the summary of the other two? Does anybody know how the energy loss due to this merge can be calculated?

Thanks in advance,
Pirooz

 

[BigInch]

The upstream channels must have the same energy grade line at the junction point, or one will flow into the other until they both become the same. The entry point to the downstream channel will have the same energy grade line of both upstream channels (which are equal) at the point of intersection. What happens downstream is a function of the downstream channel's depth of flow and velocity, depth and velocity both calculated by iteration in that area.

"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek

 

[Ktracid]

I should have been clearer. I was talking about the hydraulic analysis of junctions and reference to a document or something in order to familiarize myself with its theory.

Pirooz

 

[BigInch]

Oh. OK. Good luck with that.

"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek

 

[Ktracid]

I found something already and it is very useful:

http://eng.lacity.org/techdocs/sewer-ma/haj.pdf