[bdgloomis]

I am trying to model a gravity system with various junctions. I have a section pipe that at the start the water is raised inside the junction to exit into the pipe, this pipe then free falls into another junction. I first modeled it using the Kinematic Wave hen I tried hydrodynmaic. The hydrodynamic method seemed to do a better job. Is there any special techniques to model a pipe this way?

Can the inside area (dimensions) of junctions be changed? Are there different entrance/exit coefficients for different size junctions?