[Gmsh] Laplace and relocate optimizations

[Christophe Geuzaine]

> On 6 Dec 2019, at 19:12, Jeremy Theler <jeremy at seamplex.com> wrote:
> 
> Hi all
> 
> Does anyone know why the methods "Laplace2D" for Laplace smoothing,
> "Relocate2D" and "Relocate3D" for node relocation are available through
> the API optimize() call but not from the Mesh.HighOrderOptimize option
> within a .geo file?

You can call the optimization passes manually with 

OptimizeMesh "method";

The options define the default passes that will be applied automatically in the meshing pipeline.

(Laplace smoothing and node relocation are not for high-order (curved) meshes.)

> 
> Also... are there any references to how the different optimization
> methods work?

Some are classical (Laplace smoothing). See http://gmsh.info/doc/preprints/gmsh_untangling_preprint.pdf for high-order mesh optimization.

Cheers,

Christophe

> 
> Regards
> --
> jeremy theler
> www.seamplex.com
> 
> 
> 
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— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine