[Gmsh] ask for help-From MQ univertity, Au

[Geordie McBain]

2010/11/26 Yu Zhang <yu.zhang at mq.edu.au>:
> Dear Miss/Mr.
>
>
>
> I am just a beginner of using Gmesh.
>
>
>
> I used to use Ansys to import STL file, generate mesh and do CFD work. I am
> wondering if Gmesh can generate mesh from STL file? I searched from
> internet, and got an answer that I need to merge a STL file to a GEO file.
> But I do not know, where I should put those lines
>
>
>
> “Mesh.CharacteristicLengthFactor=0.05;
>
> Merge "artery.stl";”
>
>
>
> Should I put those lines following the endline of the STL file?
>
>
>
> I downloaded ‘artery.stl’from gmesh wiki,but when I open it using
> Gmesh-geometry-edit, unknown code comes up. When I try my own STL file, the
> ‘edit’ shows a file format like that
>
>
>
> Solid
>
> Facet normal …..
>
> Outer loop
>
>   Vertex …..
>
>   …..
>
>   Endfacet
>
> ……
>
> Endsolid
>
>
>
> However, after I put merge command at the end of this file and reload it,
> nothing happens, no geo file comes. Could you please tell me what I should
> do? Appreciate.

Nothing else can go in an STL file.  Put the Gmsh commands into a
separate file with a .geo extension.  Open the .geo file with Gmsh.
That should do the trick.