Hi Benjamin
in utilities:preferences:meshing: set automatic correct sizes to none & see if this helps this will prevent automatic refinement near small features.
regards
mark
From: gidlist-admin at gatxan.cimne.upc.edu [mailto:gidlist-admin at gatxan.cimne.upc.edu] On Behalf Of Benjamin Sanderse
Sent: 22 November 2006 14:54
To: gidlist at gatxan.cimne.upc.edu
Subject: Re: [GiDlist] airfoil mesh
Hello,
I did the tutorials and I prescribed the size of the mesh at the boundary of the airfoil. However, that does not give me the expected result: the mesh near the leading and trailing edge is still much finer, and the elements close to the surface look quite bad (in terms of aspect ratio and corner angles).
I tried now to use structured elements instead, but somehow that only works if your surface is the topological equivalent of a rectangle…so that means that I will never be able to create a structured mesh in 2D inbetween an airfoil surface and a boundary?? Sounds strange to me.
Benjamin
On 11/22/06, Abel Coll abelcs at cimne.upc.edu wrote:
Hello Benjamin,
To refine the mesh near any geometrical entity you must assign a prescribed size of the mesh to the entity (Mesh-Unstructured-Assign sizes on…).
I recommend you to do the meshing tutorials available in the web site ( http://www.gidhome.com/support/su05.subst http://www.gidhome.com/support/su05.subst ) to be able to take advantage of all the GiD meshing possibilities.
Regards,
ABEL
Abel Coll Sans
CIMNE - International Center for Numerical Methods in Engineering
Office C2 - C1Building - Campus Nord UPC
Gran Capità s/n, 08034 Barcelona
Tfn: 34 - 93 401 74 03 Fax: 34 - 93 401 65 17
abelcs at cimne.upc.edu mailto:abelcs at cimne.upc.edu
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De: gidlist-admin at gatxan.cimne.upc.edu [mailto:gidlist-admin at gatxan.cimne.upc.edu] En nombre de Benjamin Sanderse
Enviado el: martes, 21 de noviembre de 2006 23:24
Para: gidlist at gatxan.cimne.upc.es
Asunto: [GiDlist] airfoil mesh
Hello all,
I just started some time ago meshing with GiD. I just have a simple airfoil (2D) in a circular domain.
I want GiD to create a C or O-grid for my geometry. I tried several possibilities, but I could not find a way to generate a good airfoil mesh.
My mesh is always very refined at the leading and trailing edge, but misses refinement near the surface and in the wake.
As wing and airfoil meshing must be a common practice I am wondering if anybody could help me with this.
For convenience I attached my geometry as .gid file.
Thank you so much,
Benjamin
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