Bullhead Tee Pressure Loss?

[dblyle]

How do I calculate pressure loss thru a bullhead tee? The tee is 12" diameter and both flows CONVERGE into the branch. Not exactly the way I wanted it piped in, but I need to figure out if it will work or not. Any thoughts?

-DOUGLAS

 

[RossABQ]

I think one of the reasons for avoiding bullheads is that the loss thru them is unpredictable; varying for each combination of flows in the incoming streams in a non-linear way. It is a very turbulent situation.