Hello Samuel,
Negative pressure is observed when HGL reported is below the elevation of node, are there any valves in model, check for excessive headloss if yes.
Also check if the diameters are correct, check if large velocity is reported , checkā¦
Greetings! I have computed hydraulic models of my project. Everything is okay while computing. However, some of the discharges are above the initial source in the junctions and some of the velocities are out of the limit. Also some junctions have negativeā¦