[Gmsh] boolean with surface loop

[Christophe Geuzaine]

> On 16 Nov 2018, at 16:43, Guido Blöcher <bloech at gfz-potsdam.de> wrote:
> 
> Dear Christoph,
> 
> 
> 
> We try to mesh a three dimensional fracture embedded in a cylindrically shaped rock volume.
> 
> We can mesh the fracture and the cylinder separately but for later use as input for  a numerical simulation, we have to subtract or intersect the two volumes.
> 
> 
> 
> Unfortunately, gmsh provides an error message regarding our surface loop.
> 
> Gmsh complains that our surface loop is not a valid openCascade entity.
> 

Indeed: in your script you SetFactory("OpenCASCADE") after having created the first volume - which was thus created with the default "Built-In" CAD kernel.

Here's a working script:

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> 
> 
> Do you have any suggestion to perform boolean operation with our geometries?
> 
> Please find attached our input geo-file.
> 
> 
> 
> kind regards
> 
> 
> 
> Guido
> 
> 
> 
> <mjodpaciaalmgcen.png>
> 
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— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine

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