[deal.II] Re: How to implement GridGenerator::channel_with_cylinder?
Hi Nick, I think the following would work: 1. Create a triangulation via GridGenerator::plate_with_a_hole. 2. Create a second Triangulation via GridGenerator::hyper_ball. If you are working in 3D then you will have to extrude this. Use GridTools::transform to recenter this Triangulation in the center of the hole in the first Triangulation. Loop across the cells and set all the material ids. 3. Use GridGenerator::merge_triangulations to combine the two Triangulations: this should preserve the material ids. deal.II 9.0 will not copy manifold ids; however, the current 9.1 prerelease will. You will have to verify, however, that the common lines (or quads and lines in 3D) of the two Triangulations have the same manifold ids before merging. It should be possible to use a PolarManifold or CylindricalManifold to place new points on the circle (even though it is in the interior). I think Jean-Paul wrote some code to do this at some point; I am not sure what happened to it. Ultimately, since this just involves merging two Triangulations, it should not be hard to get something working on your own. Let me know if this works! Best, David Wells On Tuesday, January 15, 2019 at 10:11:07 PM UTC-5, nboyc...@gmail.com wrote: > > Does anybody have an example of how to fill out the hole and assign to it > different material ID? > > Thank you, > Nick. > > On Wednesday, December 19, 2018 at 12:07:16 PM UTC-5, Daniel Arndt wrote: >> >> Chucui, >> >> the mesh you are showing degenerates close to the midpoint. This isvery >> likely not what you wan't. >> For the inner part something like shown in >> https://www.dealii.org/developer/doxygen/deal.II/classTransfiniteInterpolationManifold.html >> would be a good idea. >> Then for the middle part GridGenerator::hyper_cube_with_cylindrical_hole ( >> https://www.dealii.org/9.0.0/doxygen/deal.II/namespaceGridGenerator.html#add14cab546d033c1eaacc9234c64ebcd >> ) >> should work, you just have to make sure that the vertices align when >> merging the two meshes via >> GridGenerator::merge_triangulations ( >> https://www.dealii.org/developer/doxygen/deal.II/namespaceGridGenerator.html#a7cd88e7eacd46697dee80ad2b8438d54 >> ). >> Make sure too choose copy_manifold_ids if you are using a developer >> version or set the manifold ids after creating and merging the whole mesh. >> Finally, for the outer part you would just merge some >> GridGenerator::subdivided_hyper_rectangle ( >> https://www.dealii.org/developer/doxygen/deal.II/namespaceGridGenerator.html#ac76417d7404b75cf53c732f456e6e971 >> ). >> Again make sure that the verices align and make sure the manifold ids are >> correct after merging all the meshes. >> >> Best, >> Daniel >> > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[deal.II] Re: How to implement GridGenerator::channel_with_cylinder?
Does anybody have an example of how to fill out the hole and assign to it different material ID? Thank you, Nick. On Wednesday, December 19, 2018 at 12:07:16 PM UTC-5, Daniel Arndt wrote: > > Chucui, > > the mesh you are showing degenerates close to the midpoint. This isvery > likely not what you wan't. > For the inner part something like shown in > https://www.dealii.org/developer/doxygen/deal.II/classTransfiniteInterpolationManifold.html > would be a good idea. > Then for the middle part GridGenerator::hyper_cube_with_cylindrical_hole ( > https://www.dealii.org/9.0.0/doxygen/deal.II/namespaceGridGenerator.html#add14cab546d033c1eaacc9234c64ebcd > ) > should work, you just have to make sure that the vertices align when > merging the two meshes via > GridGenerator::merge_triangulations ( > https://www.dealii.org/developer/doxygen/deal.II/namespaceGridGenerator.html#a7cd88e7eacd46697dee80ad2b8438d54 > ). > Make sure too choose copy_manifold_ids if you are using a developer > version or set the manifold ids after creating and merging the whole mesh. > Finally, for the outer part you would just merge some > GridGenerator::subdivided_hyper_rectangle ( > https://www.dealii.org/developer/doxygen/deal.II/namespaceGridGenerator.html#ac76417d7404b75cf53c732f456e6e971 > ). > Again make sure that the verices align and make sure the manifold ids are > correct after merging all the meshes. > > Best, > Daniel > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[deal.II] Re: How to implement GridGenerator::channel_with_cylinder?
Chucui, the mesh you are showing degenerates close to the midpoint. This isvery likely not what you wan't. For the inner part something like shown in https://www.dealii.org/developer/doxygen/deal.II/classTransfiniteInterpolationManifold.html would be a good idea. Then for the middle part GridGenerator::hyper_cube_with_cylindrical_hole (https://www.dealii.org/9.0.0/doxygen/deal.II/namespaceGridGenerator.html#add14cab546d033c1eaacc9234c64ebcd) should work, you just have to make sure that the vertices align when merging the two meshes via GridGenerator::merge_triangulations (https://www.dealii.org/developer/doxygen/deal.II/namespaceGridGenerator.html#a7cd88e7eacd46697dee80ad2b8438d54). Make sure too choose copy_manifold_ids if you are using a developer version or set the manifold ids after creating and merging the whole mesh. Finally, for the outer part you would just merge some GridGenerator::subdivided_hyper_rectangle (https://www.dealii.org/developer/doxygen/deal.II/namespaceGridGenerator.html#ac76417d7404b75cf53c732f456e6e971). Again make sure that the verices align and make sure the manifold ids are correct after merging all the meshes. Best, Daniel -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
