[Gmsh] Question on gmsh meshing with size determined by executable

[Christophe Geuzaine]

> On 18 Sep 2018, at 12:16, moritz braun <moritz.braun at gmail.com> wrote:
> 
> Dear Christophe
> 
> I am currently using gmsh  with a size function 
> that becomes very small, but not zero
> close to the positions of nuclei in a molecule
> and is scaling close to linear for distances > 0.1 abohr.
> More specifically
> i have chosen the size function as
> S*sqrt(0.02**2+d**2), with S as a parameter between 0.1 and 0.5
> It would possbily make my calculation more exact
> if I could force gmsh to use the nuclear positions
> as grid points.
> Is there a way to  get gmsh to do that?
> 

Yes : in .geo files, use "Point { ... } In Surface { ... };" or "Point { ... } In Volume { ... };".

In the API (Python, Julia, C++ or C), use the "embed" function.

Cheers,

Christophe

> Regards
> 
> Moritz 
> 
> -- 
> Prof M Braun         Tel.:27-12-4298006/8027
> Physics Department  Fax.: 27-12-4293643
> University of South Africa (UNISA)      
> moritz.braun at gmail.com
> P.O. Box 392     
> 0003 
> UNISA
>  South Africa 
> http://moritz-braun.blogspot.com

— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine

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