mastroit2002
Aerospace
Now that is quite a long time I'm using FEM code, but there is still an opened question.
In a fem job the a big amount of time seems to be used for linear system solution (from 70% to 90% in bigger problems).
Now I know that MSC Nastran can solve both directly and iteratevly those linear system. The linear system can be in output and reused.
Is there someone using a Multigrid Solver (or similar domain decomposition) or an AMG (Algebraic Multigrid Solver)?
If this time could be reduced to a tenth which will be cost effectiveness of this improvement of the solver?
Will this be useful in your evereday application of FEM methods and program?
Thank you all in advance!
In a fem job the a big amount of time seems to be used for linear system solution (from 70% to 90% in bigger problems).
Now I know that MSC Nastran can solve both directly and iteratevly those linear system. The linear system can be in output and reused.
Is there someone using a Multigrid Solver (or similar domain decomposition) or an AMG (Algebraic Multigrid Solver)?
If this time could be reduced to a tenth which will be cost effectiveness of this improvement of the solver?
Will this be useful in your evereday application of FEM methods and program?
Thank you all in advance!
