implicit / explicit solvers
 

Hi all,

is there a rule of thumb to determine witch solver (implicit or explicit) is suited better for a given problem?

Regards,
Johannes

solved
 

I think the default (explicit) is preferred/recommended for reasons of accuracy.

Hi Dear friends;

whether using implicit solvers for viscous stress & free surface pressure & advection could be good idea to calculate the sediment scour phonomena in order to reduce the computational time Or it's not recommended?

i appreciate for any comment that could be useful for me.

best regards
hamid

In the text output in the simulation manager tab, you can get information from the stability code on what is limiting the timestep. Look up the meaning of each code in the user manual. Once you determine which model is limiting the timestep, you can then change this to implicit to try and speed up the simulation.

Dear Brian, thanks for your response.

with the best wishes for you
hamid