Dear Guillaume Dilasser, Thank you Guillaume for quick and explanatory reply. Transfinite algorithm will not produce orthogonal mesh in case of complex shape like airfoil. I was doing flat plate case as an exercise. Now it is clear that for complex geometries I will have to do something else. Can you please provide guidance on the same?
-- With Regards Ashish Bhole On Tue, Jul 19, 2016 at 1:49 PM, DILASSER Guillaume < [email protected]> wrote: > Dear Ashish, > > > > The shape of the boundary layer you get is due to the fact that > BoundaryLayer fields do not overwrite the 1D mesh of the edges that do not > appear in Field.EdgesList. Now, in your case if you do add Lines 3 and 5 to > EdgesList, it would solve your problem at the corners 1001 and 1002 but > also create a layer near to edges 3 and 5 and I understand this is not what > you want. > > > > The key to get what you want is to make sure the 1D mesh on the lines > orthogonal to the BoundaryLayers is compatible with it, i.e. it needs to be > refined close to line 2. As it doesn’t seem really easy to do, I would > suggest you don’t use Fields to implement the BoundaryLayers but rather the > transfinite algorithm. The enclosed file gives you a way to do it. It will > work for simple geometries like the one you proposed but for more complex > surfaces you would probably need something else. > > > > Sincerely Yours, > > > > Guillaume DILASSER > > Doctorant SACM / LEAS > > CEA - Centre de Saclay - Bât.123 - PC 319c > > 91191 Gif sur Yvette Cedex - France - > > > > [email protected] > > > > > > > > *De :* gmsh [mailto:[email protected]] *De la part > de* ashish bhole > *Envoyé :* lundi 18 juillet 2016 19:40 > *À :* [email protected] > *Objet :* [Gmsh] Problem with boundary layer on 2D flat plate > > > > Hi, > > I have attached a geo script for mesh on 2D flat plate. I want to create > boundary layer over flat plate without use of transfinite feature, as I > want unstructured mesh outside boundary layer. > > > I am not able to use Boundary layer feature properly. I have commented > those lines in script. Can someone help me getting boundary layer correct? > > -- With Regards > > Ashish Bhole >
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