> On 31 Mar 2016, at 19:26, Bernd Hahnebach <g...@b75.ch> wrote: > > Thanks Christophe, got again the point! Works quit well for me now. > > Is it possible to script the hight order tools in a geo file? I could not > find anything in this regard (only the window position ?!?) >
You can use: Mesh.ElementOrder = 2; Mesh.HighOrderOptimize = 1; > bernd > > > Zitat von Christophe Geuzaine <cgeuza...@ulg.ac.be>: > >> >>> On 30 Mar 2016, at 07:30, Bernd Hahnebach <g...@b75.ch> wrote: >>> >>> Thanks Christophe! >>> >>> I got the problem of the high order meshes by reading a big part of the >>> paper. :-) :-) Is there any user documentation or an example how to use >>> the HighOrderTools around? >>> >>> Just to get it the right way done. How does it work in the gui? >>> >> >> 1) Load the geometry >> 2) Mesh (e.g. press "3" to do a 3D mesh) >> 3) Open "High order tools" >> - Choose the polynomial order and press "Generate" (this will create high >> order elements) >> - Press "Regularize" (this will optimize the high order elements) >> >> >>> - Load the geometry (in my case a BRep) >>> - make the adjustments on Tools --> Options --> Geometry and Mesh --> one >>> of them is 2nd order mesh >>> - In GMSH Tree press Mesh 1D, 2D, 3D >>> - on 3D I get negative Jacobians if the mesh order in options is set to two >>> - do not use any optimization, do not use the order buttons (mesh is 2nd >>> order already) >>> - open HighOrderTools >>> - Generate 2nd order vertices >>> - Regularize with given values >>> >>> - Or do I have to start with a 1st order mesh and use Generate 2nd order >>> vertices on a 1st order mesh? >>> - Should any of the optimizations be done before the HighOrderTools? >>> >>> kind regards bernd >>> >>> >>> Zitat von Christophe Geuzaine <cgeuza...@ulg.ac.be>: >>> >>>> >>>>> On 24 Mar 2016, at 19:06, Christophe Geuzaine <cgeuza...@ulg.ac.be> wrote: >>>>> >>>>>> >>>>>> On 24 Mar 2016, at 12:27, Bernd Hahnebach <g...@b75.ch> wrote: >>>>>> >>>>>> >>>>>> What is the recommended way to avoid such negative jacobians? Attached >>>>>> the geometry of the mesh above. >>>>>> >>>> >>>> And to avoid such negative jacobians, you can use the "High order tools" >>>> (in the Mesh menu). This is still experimental, but works quite well. The >>>> algorithms are described (in part) in >>>> >>>> T. Toulorge, C. Geuzaine, J.-F. Remacle, J. Lambrechts. Robust untangling >>>> of curvilinear meshes. Journal of Computational Physics 254, pp. 8-26, >>>> 2013. http://gmsh.info/doc/preprints/gmsh_untangling_preprint.pdf >>>> >>>> Christophe >>>> >>>> >>>> -- >>>> Prof. Christophe Geuzaine >>>> University of Liege, Electrical Engineering and Computer Science >>>> http://www.montefiore.ulg.ac.be/~geuzaine >>>> >>>> Tetrahedron V, July 4-5 2016: http://tetrahedron.montefiore.ulg.ac.be >>>> Free software: http://gmsh.info | http://getdp.info | http://onelab.info >>>> >>>> >>>> >>> >>> >>> >>> >>> >>> _______________________________________________ >>> gmsh mailing list >>> gmsh@onelab.info >>> http://onelab.info/mailman/listinfo/gmsh >> >> -- >> Prof. Christophe Geuzaine >> University of Liege, Electrical Engineering and Computer Science >> http://www.montefiore.ulg.ac.be/~geuzaine >> >> Tetrahedron V, July 4-5 2016: http://tetrahedron.montefiore.ulg.ac.be >> Free software: http://gmsh.info | http://getdp.info | http://onelab.info >> >> >> > > > > -- Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine Tetrahedron V, July 4-5 2016: http://tetrahedron.montefiore.ulg.ac.be Free software: http://gmsh.info | http://getdp.info | http://onelab.info _______________________________________________ gmsh mailing list gmsh@onelab.info http://onelab.info/mailman/listinfo/gmsh
