Elmer Discussion Forum

Hi The coordinate system is standard cartesian one. The field cannot be directly imposed but instead a small system is solved and the magnetic field strength is transformed to a BC for the vector potential. Here is a caveat since the BCs can only be set in the direction of the edges of the boundary....

Hi

This should not be any limitations since at least maybe a year ago. Until that the "Exported Variables i" where formed in ELMERSOLVER_KEYWORDS. Now the keyword "Keyword i" is assumed to be of same type as "Keyword 1".

When was your ElmerSolver compiled?

-Peter

Hi Dirichlet conditions are not eliminated. Instead the matrix row is zeroed except for the diagonal entry which allows to set identity A_ii*x_i=b_i. Elimination has its pros and cons. For example, the matrices would be smaller and retain full symmetry (if initially symmetric) with elimination. On t...

Hi Iterative methods have a tolerance that is typically in range 1e-6...1e-12. The tougher the tolerance the closer you get to direct solvers. There is no point in trying to get to zero since for double precision eps=EPSILON(x)=2.2204460492503131E-016. This means that for x<eps we have always 1+x=1....

Hi What if you set for the ElasticSolver Steady State Condition = 1.0 If this keyword is positive it overrides the transient nature. The intended use if, for example, to start a simulation with a steady-state solution without need for separate setup. However, It could work here as well. Generally th...

Hi, Sorry, I cannot reproduce this. Also your binary is ~10 months old so there may have been changes. Can somebody else reproduce the issue? Btw, if you use the "Geometry Ids" to pick pieces of the mesh then you don't really need "vtu part collection". These are alternative ways...

Hi

What if you remove the line or create the directory by hand.

Things may not always work exactly the same way in Windows. So maybe the internal make directory failed?

-Peter

Hi Silly me. I was so convinced it was the elasticity equation that I wrote the explanation even though it was about the heat solver. There really is not any better tool than to maximize the output (the max value is 32). You can save some matrices etc. but you can see that the checksums for the matr...

Hi Roland,

I have never used Paraview for line plots. I don't know how it fares there. My choices are:

0D/1D -> SaveScalars/SaveLine -> Matlab/octave
2D/3D -> VtuOutput -> Paraview

-Peter

Hi, I don't understand either why the two different platforms would act so differently. Somehow the two iterative processes take a very different route. Maybe initial guess is very different allthough the seed is the same. Different routes happen often but usually much later in the iteration. Howeve...