This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Selecting the best numerical solver

Hello,

I'm simulating a storm water network in Sewergems plat form.

My network contains open channels, pipes, ponds, pond outlet structures and pumping option.

The network was design for 5 yr - 1 hr duration event. and I can simulate the model in Implicit solver with some adjustments to Implicit solver parameters. And I simulate the same model with Explicit solver and no much deviation in the results.

I want to check the same model performance for 50 yr -24 hr event. I could not fix the parameters so that the simulation ends with reasonable results in reasonable time. most of the time I was end up with the message "The model did not converge and no valid results are obtained, check the data or adjust calculation options"

I have two question.

1. Which solver would be the best suit with this nature of network?

2. In Explicit model, the drainage path considered as prismatic section. In my network I'm having channels (95% of network are open channels.). Do I need to convert my whole model in to conduits or does the software converts what ever the open channels in to Prismatic sections with in the software?

Thanks and Regards

Nishadi