ZhouBin wrote: > Dear Christophe, > > Thank you very much for your patience. I have made one solution to my > last problem: put fine mesh around the circles. > > However, as you could see from my latest version (.geo file), I have > some circles which are close to the boundary, the mesh is so skewed. > > Since I remember, Gmsh starts from line-->face-->volume, I really do to > know how to deal with these circles. (I do not want to decrease the > characteristic length for the whole domain, because of such close, small > gap). > > Here I would like to send you my geo file, dear Christophe, if you have > time, would you mind to take a look?
The problem lies in the accuracy of the 1D mesh algorithm. You can increase it with "Mesh.LcIntegrationPrecision=1.e-12;". If this is too slow, you could also define attractors on the boundary. > > Really appreciate your great advice. > > Best regards, > > Bin > > > ------------------------------------------------------------------------ > From: [EMAIL PROTECTED] > To: [EMAIL PROTECTED] > CC: [email protected] > Subject: RE: [Gmsh] aspect ratio error > Date: Sat, 15 Nov 2008 12:37:45 +0100 > > Dear Christophe, > > I have a problem to control "aspect ratio". > > Here I attach the geo file, after generating the mesh using Gmsh, I use > OpenFOAM to check the mesh, but I find that the aspect ratio is about > 14. My professor suggests me to use aspect ratio =2. > > Could you please give me some hints about how to generate mesh with > given aspect ratio? > > Best regards, > > bin > > ------------------------------------------------------------------------ > 使用新一代 Windows Live Messenger 轻松交流和共享！ 立刻下载！ > <http://im.live.cn/> > ------------------------------------------------------------------------ > 使用新一代 Windows Live Messenger 轻松交流和共享！ 立刻下载！ > <http://im.live.cn/> -- Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
