Hi,
Using implicit I am getting negative value for Total system overflow volume. Is this acceptable? Thanks
Regards,
Jan
Hello Jan,
It could be due to large continuity error, please check user notifications that shall guide you to any problems in the model.
Generally continuity error below 5 % is acceptable, please look at troubleshooting steps mentioned in below wiki to reduce the continuity error.
What is the continuity error and what's a good percentage for it?
Troubleshooting unstable SewerGEMS and CivilStorm results using the implicit solver
Sushma Choure
Bentley Technical Suppport
Hi Sushma
I've tried changing parameters but the negative volume is still there. There is a pump within the system. Maybe the pump is the reason why there is negative volume? Thanks
Default parameters:
Output increment-3 min
Calc timestep-1.5min
LPI coefficient-1.0
NR weighting coefficient-10
Relaxation WC-0.66
Computational distance-15.2m
Jan,
We will check with our lead developer, but here are a few other thoughts in the meantime:
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.