[Gmsh] problem 3D transfinite algorithm

Christophe Geuzaine cgeuzaine at ulg.ac.be
Mon May 22 20:49:33 CEST 2017

Hi Danny,

You specified the transfinite interpolation corners in an incompatible way between the surfaces and the volumes. For simple surfaces (with 3/4 vertices) you actually don't have to specify them by hand: here's your file, simplified:

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> On 13 May 2017, at 13:39, Danny Lathouwers - TNW <D.Lathouwers at tudelft.nl> wrote:
> Hello,
> I am trying to build a geometry consisting of 3 blocks connected.
> The blocks should have stretched meshes (as seen when generating 2D meshes in the attached geo).
> I failed when attempting to do the 3D. At first I removed the interconnecting surfaces between the blocks so that the complete volume could be meshed.
> That did not work (perhaps too complex, too many surfaces involved?).
> In a second try, I added these interconnecting surfaces and generate the volumes separately as in the Test.geo. Even the first block fails to generate (incompatible surface message). This seems to be something I am doing wrong?
> Even if this can be made to work I will probably end up with 3 non-connected meshes right? This woud not be what I want. Can these then be connected?
> Could you give me a hand with this geometry/mesh?
> Thanks very much !
> Danny.
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 

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