Any tips for how to set this model up properly in 1D - steady flow? (beginner)
Modeling a proposed canal (left) that ties to an existing channel (right) with a culvert. I'm running into WSE backwatering issues which I believe have something to do with the following error warning I received for the XS immediately downstream of the junction.
- The energy equation could not be balanced within the specified number of iterations. The program used critical depth for the water surface and continued on with the calculations.
I have tried many tips and tricks for improving model stability like reducing XS spacing, making sure XS are as close to the junction as possible, cleaning up manning's n values, and increasing maximum iterations/tolerances for the steady flow analysis. I've looked into modeling the culvert as an inline structure and a lateral structure, but haven't yielded any good results. I also tried using a terrain modification to allow for cleaner XS along the existing channel.
How would you model this configuration? Or is a 1D-steady model too limited for a junction like this?