> On 19 Nov 2019, at 14:56, Maurice Rohracker <[email protected]> wrote: > > Dear GMSH users and developers, > > For a project at the University Erlangen-Nürnberg, I would like to mesh some > geometry with randomly generated inclusions in a box (as you can see in the > attachment) to get a relatively structured quadrilateral mesh with good > quality using this then for FE simulations. We are using therefor the python > API. > > Right now, we get as a result in most cases these diamond elements, which > some of them have very large angles up to 180 degrees or very acute angles. > How can I avoid these and get a much better quality mesh? > > Here are the adjustments we’re using right now. > > Mesh.Algorithm: 9 - Packing of Parallelograms > Mesh.RecombineAll: 1 - quad elements > Mesh.SubdivisionAlgorithm: 1 - all quads > Mesh.RecombinationAlgorithm: 2 - simple quad (the mesh result didn’t get even > better for different adjustments) > We specify the mesh size at the points. Especially at the four corner points > (0.3) and at the 3 points on the circles (0.12), where the size of the box is > 10x10 and the radius 0.5. > > Do have any tips to improve the quality, are there adjustments missing (like > transfinite) or anything else. It doesn’t have to be fully structured, but we > try to get as far as possible, especially we don’t want to have large or > small angles. >
I would use this, which seems fine :
input_Geom_new.geo
Description: Binary data
> If needed I also can share the .msh file. > > Thank you very much in advance. > > Best regards > Maurice Rohracker > Master student Computational Engineering FAU Erlangen-Nürnberg > > <input_Geom.geo><geometry.png><mesh.png>_______________________________________________ > gmsh mailing list > [email protected] > http://onelab.info/mailman/listinfo/gmsh — Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine
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