<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear Prof. Geuzaine,<div class=""><br class=""></div><div class="">many thanks for the feedback! I have tried to use exactly the same procedure, but gmsh simply crashes without an error message when I try to e.g. refine the remeshed mesh.</div><div class=""><br class=""></div><div class="">Attached is a very minimal working example: „channel_orig.msh“ is the original mesh created by gmsh itself. It appears to be valid in all regards, my flow solver works flawlessly on this. „Remesh_channel.geo“ is the file I actually open for remeshing and I manage to remesh the geometry successfully.</div><div class=""><br class=""></div><div class="">But whenever I try to refine the rather coarse remeshed cannel using the gui, gmsh crashes without throwing any error messages and I am stuck on how to make a finer mesh. I am using the following build and version of gmsh:</div><div class=""><br class=""></div><div class=""><div class="">Info : -------------------------------------------------------</div><div class="">Info : Gmsh version : 2.11.0</div><div class="">Info : Build OS : MacOSX</div><div class="">Info : Build options : Ann Bamg Bfgs Blas(Custom) Blossom Chaco DIntegration Dlopen Fltk Gmm Jpeg(Fltk) Kbipack Lapack(Custom) MathEx Med Mesh Metis Mmg3d Mpeg NativeFileChooser Netgen ONELAB ONELABMetamodel OpenCascade OpenGL OptHom PETSc Parser Plugins Png(Fltk) Post SLEPc Salome Solver Tetgen(1.5) Voro3D Zlib</div><div class="">Info : Build date : 20151107</div><div class="">Info : Build host : Christophes-Mac.local</div><div class="">Info : Packager : geuzaine</div><div class="">Info : Executable : /Applications/Gmsh.app/Contents/MacOS/gmsh</div><div class="">Info : Home directory : /Users/schmidt/</div><div class="">Info : Launch date : Fri Apr 29 17:47:49 2016</div><div class="">Info : Command line : /Applications/Gmsh.app/Contents/MacOS/gmsh</div><div class="">Info : -------------------------------------------------------</div></div><div class=""><br class=""></div><div class="">I would be very thankful if you could kindly provide feedback with respect to this:</div><div class=""><br class=""></div><div class="">- How can I generate a finer mesh? Ideally, I would love to carry over the Delauney-weights associated with the original points into the remeshing information.</div><div class="">- Does the remeshed mesh also contain the same physical boundaries as the original mesh or do I have to re-identify the different boundaries afterwards manually? I know from the .stl 3D example how to do this when each physical boundary is contained within its own .stl file, but I would much appreciate hints on how to match a compound quantity with a physical surface and consequently a boundary marker in the case here, where everything stems from a single .msh file.</div><div class=""><br class=""></div><div class="">Regards and many thanks,</div><div class="">Stephan Schmidt</div><div class=""><br class=""></div><div class=""></div></body></html>