Hello Kate, The issue might be related to some recent bug in 2.9.3. I am saying this because if I try to remesh with that I get a crash, while remeshing works quite well with an older Gmsh that I have (2.8.6).
Also, I think you get a better mesh if you follow Tutorial 13 (http://geuz.org/gmsh/doc/texinfo/gmsh.html#t13_002egeo) and reconstruct the edges as well. If not, only the interiors of the faces will remeshed. I've added an updated test.geo with does this. Best regards, Serban From: gmsh [mailto:[email protected]] On Behalf Of look Sent: 25 June 2015 11:57 To: [email protected] Subject: [Gmsh] Remesh STL Hello everybody, I am trying to remesh a very easy trivial *.stl geometry which I previously generated in Blender. Therefore I followed the instructions from a gmsh mailing list post: http://geuz.org/pipermail/gmsh/2011/006887.html 1) Open inout.stl in gmsh (with gui) 2) Click on Mesh->Reclassify 2D 3) Click on "All" in step 1 and step 3, then click on "Reclassify" 4) Save the reclassified mesh as a new msh file -> reclassified_inout.msh 5) I can see several distinct surfaces when I open this new file and go to Tools/Visibility. 6) Write a new file test.geo: Mesh.RemeshAlgorithm=1; Mesh.CharacteristicLengthFactor=0.05; Merge "reclassified_inout.msh"; CreateTopology; Compound Surface(23)={3}; Compound Surface(24)={4}; Compound Surface(25)={5}; Compound Surface(26)={6}; Compound Surface(27)={7}; Compound Surface(28)={8}; Compound Surface(29)={9}; Compound Surface(30)={10}; Compound Surface(31)={11}; Compound Surface(32)={12}; Compound Surface(33)={13}; Compound Surface(34)={14}; 7) Run Code: gmsh -2 test.geo Unfortunately I get the following error message: Code: kate@kate-VirtualBox:/media/sf_documents/gmsh/Daten/inout_cubes_vonBlender$ gmsh -2 test.geo Info : Running 'gmsh -2 test.geo' [Gmsh 2.9.3, 1 node, max. 1 thread] Info : Started on Thu Jun 25 11:34:00 2015 Info : Reading 'test.geo'... Info : Reading 'reclassified_inout.msh'... Info : 16 vertices Info : Vertex numbering is dense Info : 36 elements Info : Done reading 'reclassified_inout.msh' Info : Creating topology from mesh... Info : Removing duplicate mesh vertices... Info : Found 0 duplicate vertices Info : No duplicate vertices found Info : Done creating topology from mesh (0.000554 s) Info : Done reading 'test.geo' Info : Meshing 1D... Info : Done meshing 1D (1.7e-05 s) Info : Meshing 2D... Info : Meshing surface 23 (Compound surface, MeshAdapt) Info : Parametrizing surface 23 with 'convex map' [0]PETSC ERROR: --------------------- Error Message -------------------------------------------------------------- [0]PETSC ERROR: Object is in wrong state [0]PETSC ERROR: Not for unassembled matrix [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting. [0]PETSC ERROR: Petsc Release Version 3.5.2, Sep, 08, 2014 [0]PETSC ERROR: gmsh on a linux_complex_mumps_seq named kate-VirtualBox by kate Thu Jun 25 11:34:00 2015 [0]PETSC ERROR: Configure options --with-pic --with-blas-lapack-lib="[/usr/local/lib/liblapack.a,/usr/local/lib/libblas.a,-lpthread]" --with-clanguage=cxx --with-debugging=0 --with-mpi=0 --with-x=0 --with-ssl=0 --with-mpiuni-fortran-binding=0 --with-mumps-include=/home/geuzaine/src/mumps_seq/include --with-mumps-lib="[/home/geuzaine/src/mumps_seq/lib/libcmumps.a,/home/geuzaine/src/mumps_seq/lib/libsmumps.a,/home/geuzaine/src/mumps_seq/lib/libdmumps.a,/home/geuzaine/src/mumps_seq/lib/libzmumps.a,/home/geuzaine/src/mumps_seq/lib/libmumps_common.a,/home/geuzaine/src/mumps_seq/lib/libmetis.a,/home/geuzaine/src/mumps_seq/lib/libmpiseq.a,/home/geuzaine/src/mumps_seq/lib/libpord.a]" --with-mumps-serial --with-shared-libraries=0 --with-scalar-type=complex [0]PETSC ERROR: #1 MatGetOrdering() line 189 in /home/geuzaine/src/petsc-3.5.2/src/mat/order/sorder.c [0]PETSC ERROR: #2 PCSetUp_ILU() line 196 in /home/geuzaine/src/petsc-3.5.2/src/ksp/pc/impls/factor/ilu/ilu.c [0]PETSC ERROR: #3 PCSetUp() line 902 in /home/geuzaine/src/petsc-3.5.2/src/ksp/pc/interface/precon.c [0]PETSC ERROR: #4 KSPSetUp() line 305 in /home/geuzaine/src/petsc-3.5.2/src/ksp/ksp/interface/itfunc.c [0]PETSC ERROR: #5 KSPSolve() line 417 in /home/geuzaine/src/petsc-3.5.2/src/ksp/ksp/interface/itfunc.c [0]PETSC ERROR: #6 _try() line 9 in /home/geuzaine/src/gmsh/Solver/linearSystemPETSc.hpp Aborted (core dumped) I have attached the necessary files to reproduce the problem. I tried with gmsh 2.9.3 on OS X and gmsh 2.9.3 on Ubuntu. I would appreciate any help/hint/comment! Best regards, Kate ______________________________________________________________________ Fujitsu Laboratories of Europe Limited Hayes Park Central, Hayes End Road, Hayes, Middlesex, UB4 8FE Registered No. 4153469 This e-mail and any attachments are for the sole use of addressee(s) and may contain information which is privileged and confidential. Unauthorised use or copying for disclosure is strictly prohibited. The fact that this e-mail has been scanned by Trendmicro Interscan does not guarantee that it has not been intercepted or amended nor that it is virus-free.
test.geo
Description: test.geo
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