> On 24 Feb 2017, at 01:27, Junhui Liu <[email protected]> wrote:
>
> I use Extrude command with layers to generate boundary-layer unstructured
> mesh. The recombine command is not used, so the mesh remains as unstructured.
> It appears that if the periodic surfaces are generated by using extrude
> command with layers specified, the msh (tetral mesh) data will not have the
> information of the slave and master nodes. I need to export the mesh data to
> a existing CFD software, and need to know the node connection between the
> Master and Slave periodic surfaces. The existing CFD software does not care
> if the mesh appears to be structured or unstructured. It only cares if the
> mesh is tetrahedron mesh. The following attached lines generate a box with
> structured tetrahedron mesh. The mesh data does give the Slave and Master
> surface entity numbers, but it does not give the nodes associated with them.
> Is there a way I can output the slave and master node information when
> periodic surfaces are generated by using extrude command with layers
> specified?
Hi Junhui - Not currently, but it's on the wishlist of some of our users.
>
> Thanks a lot for your help.
>
> Junhui
>
>
>
>>>>>>>>>>>>> box.geo >>>>>>>>>>>>>>>>
>
> lc = 0.1;
> Point(1) = {0.0, 0.0, 0.0, lc};
> line_extrude[] = Extrude {1.0, 0.0, 0.0} {Point{1}; Layers{10};};
>
> surface_extrude[] = Extrude {0.0, 1.0, 0.0} {Line{line_extrude[1]};
> Layers{10};};
>
> Volume_extrude[] = Extrude {0.0, 0.0, 1.0} {Surface{surface_extrude[1]};
> Layers{10};};
>
> surfMaster = surface_extrude[1];
> surfSlave = Volume_extrude[0];
>
> boundMaster[] = Boundary{Surface{surfMaster};};
> boundSlave[] = Boundary{Surface{surfSlave};};
> Periodic Surface surfSlave { boundSlave[] } = surfMaster { boundMaster[] };
>
--
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine
Free software: http://gmsh.info | http://getdp.info | http://onelab.info
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