ôQoutö greater than æQinö in ICPR 1

[xghalibx]

Folks:

I am modeling an elliptical pipe which is routing water from only one drainage basin. Both ends of the pipe are defined as nodes (i.e. upstream is a node and downstream is a node). When I run the model, the node min/max output shows that more Q is coming out than going in.

Can someone explain this to me? There’s only one drainage basin going in to this pipe. The difference between Qin and Qout is fairly significant (27 cfs vs. 54; 47 cfs vs. 74 cfs).

Thanks

 

[0verflow]

I use ICPR all the time. I am still new to it, but I echo the response to cut down the calc time. It seems that culvert flow or flow when the pipe ends are submerged makes it a little unstable. Less calc time has fixed it for me. Good luck.