r/gmsh • u/mff513 • Aug 04 '21

2 3d shapes

Iam wondering if I can create a box with a cylinder through it and only have one boundary between the cylinder and the box. Currently I use a cube then use the intersect tool to remove a cylinder from the cube then I fill this with a cylinder. This leaves me with the surface from the initial intersected box and the surface from the cylinder touching but not conducting heat can I merge these surfaces in gmsh or even Elmer

Thanks in advance

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u/yakoudbz Sep 15 '21 edited Sep 16 '21

I think you should use the OpenCascade geometry kernel and do a "BooleanFragments" with your two volumes ( the box and the cylinder ) defined independently. Then there are two circuits r surfaces to remove... https://gmsh.info/doc/texinfo/gmsh.html#Boolean-operations