Dear supporters,
I noticed during different transient simulations the following error message produced by the SAMG solver: "Time step #<timestep>: SAMG has NOT converged after <some integer> iterations with the residual <some number greater than 1E-8>".
It is the <some integer> that I fail to understand. Sometimes it's 5 and other times it's 7, 13 or some other integer. Solvers have an error criterion and a number of iterations to reduce the error below this criterion. The information that the solver has not reached the error criterion after say 5 iterations is pretty useless if it has another 25 iterations to further reduce the error. It would make sense if the error message was something like this: "Time step #<timestep>: SAMG has NOT converged after the maximum number of iterations with the residual <some number greater than 1E-8>"
How am I supposed to interpret this error message?
Best regards and thanks in advance!
Søren