Hello Matthias, you can use the bamg algorithm by calling 'gmsh -2 -algo bamg my_file.geo' from command line. For 3d anisotropic mesh, you do the same with '-3 -algo mmg3d'.
You need to supply a mesh size field which will tell the anisotropic algorithm in which direction to refine the mesh. Best regards, Martin Vymazal On Thursday 16 February 2012 10:56:06 Zenker, Dr. Matthias wrote: Hi, does anyone have an answer to the question below? It was said that an anisotropic mesh can be achieved using the bamg algorithm. I have some questions: My 3D geometry consists of several layers stacked in z direction. Some of these layers are rather thin. I would like to have a mesh which is finer in z direction than in x and y direction. Can this be achieved using the bamg algorithm? If so, how? How can I access this algorithm from the GUI? I did not find it in Options – Mesh. If not accessible from the GUI, how else can I use it? Is there any documentation available concerning this topic? I did not find anything in the gmsh manual (which is from October 2010 btw). Thank you, Matthias ---------------------------------------------------------------- ERBE Elektromedizin GmbH Dr.rer.nat. Matthias Zenker Dipl. Phys. Grundlagenentwicklung / Fundamental Development Waldhoernlestrasse 17 72072 Tuebingen Germany Phone + 49 (0) 7071 755 - 226 Fax + 49 (0) 7071 755 - 5226 E-Mail: <mailto:[email protected]> URL: http://www.ERBE-med.com ---------------------------------------------------------------- _____________________________________________________________________ ERBE Elektromedizin GmbH Firmensitz: 72072 Tuebingen Geschaeftsfuehrer: Christian O. Erbe, Reiner Thede Registergericht: Stuttgart HRB 380137
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