brought many improvements for FEM, especially the result pipe system and Elmer.
However, bugfixing goes on since our active community reports issues.
In order that you do not have to want some months to benefit from the recent fixes, I will publish here a package with patched files as ZIP. To benefit from the recent fixes, the workflow is this:
- install FreeCAD 0.20.1
- extract the ZIP to the folder "~\Mod\Fem" of your FreeCAD installation folder (overwrite thereby the existing files)
Please report issues your have for the patches to this thread.
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initial release: 13-08-2022: fixes:
- bug that all equations were used, no matter if the material is a solid or fluid:
- bug that the heat flux in the temperature constraint was incorrectly transferred to Elmer
- issue with spaces in filenames: issue #7360
- selection bug for 2D shapes: git commit 877e77c0
- tooltips for flow constraints were wrong: git commit 7fb4ac26
- Elmer: support to disable the linear solver system.
Assuming your have an analysis with 3 different equations and you want to turn off one for testing, you can set the equation property "LinearSystemSolverDisabled" to true and the solving of this equation will not be performed.
git commit 7d9855c8 - add support for the preconditioner "ILUT"
git commit 7d9855c8
(By the way, for flow simulations, I found out that the preconditioner matters. For Diagonal and ILUT there is no convergence. ILU1 was the best.) - add support for the iterative solver method "Idrs"
git commit 7d9855c8