> On 4 Oct 2019, at 05:54, Peter Johnston <[email protected]> wrote: > > Hello, > > I was under the impression that CharacteristicLengthMax was used to control > the mesh size in gmsh. However, I seem to he having some issues. > > In the attached python script, I read in some STL files that define surface. > I then define some volumes and then mesh them. If I do not set > CharacteristicLengthMax I get a volume mesh as shown in no-max.jpg. This is > OK, but I would like some more nodes within and around my heart. If I set > CharacteristicLengthMax=0.5, then I get a similar mesh around the heart, but > it is finer away from the heart (max-0-5.jpg). However, if I set > CharacteristicLengthMax=0.05, then I appear to get rubbish, especially around > the heart (max-0-05.jpg). > > Clearly, I have missed something.
The STL mesh you merge will not be remeshed, so it constraints the volume mesh size. If you want to remesh the STL, see e.g. tutorial/t13.geo. Christophe > > I also tried to use a ball around the heart region, but that didn’t achieve > anything. Given the above comments, I was unsure what to put in for VIN and > VOUT. > > Any thoughts would be much appreciated. > > Thank you, > > Peter. > > --------------------------------------------------------------------- > > Associate Professor Peter Johnston (FAustMS, FIMA) > School of Environment and Science > Griffith University | Nathan | QLD 4111 | Technology (N44) Room 3.19 > T +61 7 373 57748| F +61 7 373 57656 Email [email protected] > <strtp.py><no-max.jpg><max-0-5.jpg><max-0-05.jpg>_______________________________________________ > 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 _______________________________________________ gmsh mailing list [email protected] http://onelab.info/mailman/listinfo/gmsh
