[Gmsh] Boolean Fragments. Créate 3d mesh from surfaces. Surface Loop creates aditional surfaces

[Jacob Abdelfatah Ndioubnane]

Is thiis would be related to the normals of the surfaces?. I noticed that the normals is oriented outward. So i tried to invert the normals but i cannt find a way to do this.

I attach a figure below.

Best Regards
Jacob[cid:image002.png at 01D39FEA.A3D5FC70]

Enviado desde Correo<https://go.microsoft.com/fwlink/?LinkId=550986> para Windows 10

De: Jacob Abdelfatah Ndioubnane<mailto:jacoban90 at outlook.es>
Enviado: martes, 6 de febrero de 2018 22:36
Para: Christophe Geuzaine<mailto:cgeuzaine at ulg.ac.be>; gmsh at onelab.info<mailto:gmsh at onelab.info>; gmsh-owner at onelab.info<mailto:gmsh-owner at onelab.info>; gmsh-request at ace20.montefiore.ulg.ac.be<mailto:gmsh-request at ace20.montefiore.ulg.ac.be>; G. D. McBain<mailto:gdmcbain at protonmail.com>
Asunto: Boolean Fragments. Créate 3d mesh from surfaces. Surface Loop creates aditional surfaces

Hi gmsh users:

I’m trying to créate a 3d mesh of a cube from a merged 3d surfaces to apply physical groups easily. I applied the booleanFragments operator, and it removes the aditional edges and vértices. However, when I créate a Surface loop, automatically generates aditional surfaces(when i go to tools;vissibility;tree appears 12 surfaces) it creates a , and the volume is referenced to the dupplicate surfaces. Im able to créate both 2d and 3d meses, but when i export into freefem as .mesh or .msh is not loaded correctly. Is there any way to solve this problem.  I attach the .geo script below and also the .brep surfaces and the generated .mesh and .msh meses.

// Gmsh project created on Tue Feb 06 20:13:28 2018
SetFactory("OpenCASCADE");

Merge "Inlet.brep";
Merge "Walls.brep";
Merge "Outlet.brep";

s() = Surface "*";
BooleanFragments{ Surface{s(0)}; Delete; }{ Surface{s({0:#s()-1})}; Delete; }//+




//+
Surface Loop(1) = {1, 5, 2, 3, 6, 4};

Volume(1) = {1};

Thank you very much in advance.

Best Regards
Jacob

Enviado desde Correo<https://go.microsoft.com/fwlink/?LinkId=550986> para Windows 10


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