[Gmsh] High-Order Meshing

[Jean-François Remacle]

BTW boundary layer meshes are available in 2D and very soon in 3D …

JF
Le 11 déc. 2013 à 11:53, George Ntemos <george.ntemos11 at imperial.ac.uk> a écrit :

> Dear Gmsh Development Team,
> 
> 
> My name is George Ntemos and I am a PhD student in the Aeronautics Department of Imperial College London. Our team is developing and applying CFD software, using gmsh for high-order meshing purposes.
> I am currently studying a flow case around a rod-aerofoil set-up and I've been experiencing some problems with high-order meshing. More specifically, the meshing algorithm fails to mesh in high order around the (spline-defined) aerofoil profile. Please find attached a lightweight .geo file of my configuration just for demonstration purposes. If one tries meshing this file in 3d and for order > 1, gmsh will warn that, to my understanding, the algorithm fails to properly converge at certain points, visibly resulting in quite severe discrepancies for a few elements (curvilinear on). It also warns that it cannot orient the normal for the two extruded surfaces of the rod (cylinder) boundary layer. It is worth noting here that I am experiencing none of the above problems when I am meshing in 2d. Since my 3d mesh is just a simple extrusion, I would assume that extending to 3d is just a trivial case of translating every operation along the 3rd dimension. I am of course not particularly experienced in using gmsh however and I may very well be missing something here.
> Any help regarding these issues would be greatly appreciated.
> Thank you for your time.
> 
> Best regards,
> George
> <rod_aerofoil_3d_light.geo>_______________________________________________
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Prof. Jean-Francois Remacle
Universite catholique de Louvain (UCL)
Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering
Institute of Mechanics, Materials and Civil Engineering (iMMC)
Center for Systems Engineering and Applied Mechanics (CESAME)
Tel : +32-10-472352 -- Mobile : +32-473-909930 

 





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