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3.5 and 4.1 solver difference?
Posted Mar 9, 2012, 6:56 p.m. EST 2 Replies
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I have a model, which can be solved in 4.1.
The same setting in 3.5, then the model doesn't converge.
I load the 3.5 version model in 4.1 and add a new study. It converge again.
Who knows the difference between the solvers in 3.5 and 4.1?
Thanks
The same setting in 3.5, then the model doesn't converge.
I load the 3.5 version model in 4.1 and add a new study. It converge again.
Who knows the difference between the solvers in 3.5 and 4.1?
Thanks
2 Replies Last Post Mar 9, 2012, 11:57 p.m. EST
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Posted:
1 decade ago
which of the solvers you use? what are the settings? if you are using default, they might be different.
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Posted:
1 decade ago
You are right. The 3.5 is using the PARDISO, while 4.1 is using MUMPS.
I am coupling electrostatics, Nernst-Planck with Navier-Stokes equation.
When just with electrostatics and nernst-planck, 3.5 can give a correct answer.
Also with just using Navier-Stokes equation, 3.5 is fine too.
However, when I coupled them together, 3.5 didn't converge and said that the error is beyond tolerance.
I am coupling electrostatics, Nernst-Planck with Navier-Stokes equation.
When just with electrostatics and nernst-planck, 3.5 can give a correct answer.
Also with just using Navier-Stokes equation, 3.5 is fine too.
However, when I coupled them together, 3.5 didn't converge and said that the error is beyond tolerance.