Hello,
I’ m working with BEM in a pipelike geometry, and i need that the order of
the nodes of and element generate a normal vector pointing outside the
surface, the numeration of the nodes must be counterclockwise. Reading the
mesh in a GID format (.msh) i realice that this statement it`s right for the
“outer” surface of the mesh but in the “inner” surface of the pipe the
normal vector points inside the body. This can be avoided?, i’ m making some
mistake?
Thanks in advance.
Johane Bracamonte
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Usually, when you create a volume in GiD, the boundary surfaces are oriented with normal pointing inside the volume.
In any case, you can change this orientation: menu Utilities-Swap normals-Surfaces
When you generate a mesh, the element’s normals are the same as the source surface normals.
Regards
Enrique Escolano
----- Original Message -----
From: Johane Bracamonte
To: gidlist at gatxan.cimne.upc.es
Sent: Friday, August 04, 2006 11:26 PM
Subject: [GiDlist] counterclockwise order of the nodes
Hello,
I’ m working with BEM in a pipelike geometry, and i need that the order of the nodes of and element generate a normal vector pointing outside the surface, the numeration of the nodes must be counterclockwise. Reading the mesh in a GID format (.msh) i realice that this statement it`s right for the “outer” surface of the mesh but in the “inner” surface of the pipe the normal vector points inside the body. This can be avoided?, i’ m making some mistake?
Thanks in advance.
Johane Bracamonte
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Check menus:
View-Normals
Utilities-Swap normals
–
Compass Ing. y Sistemas Dr. Ramon Ribo
http://www.compassis.com ramsan at compassis.com
c/ Tuset, 8 7-2 tel. +34 93 218 19 89
08006 Barcelona, Spain fax. +34 93 396 97 46
En Fri, 04 Aug 2006 23:26:06 +0200, Johane Bracamonte johanehb at gmail.com
escribió:
Hello,
I’ m working with BEM in a pipelike geometry, and i need that the order
of
the nodes of and element generate a normal vector pointing outside the
surface, the numeration of the nodes must be counterclockwise. Reading
the
mesh in a GID format (.msh) i realice that this statement it`s right for
the
“outer” surface of the mesh but in the “inner” surface of the pipe the
normal vector points inside the body. This can be avoided?, i’ m making
some
mistake?
Thanks in advance.
Johane Bracamonte
\
Compass Ing. y Sistemas Dr. Ramon Ribo
http://www.compassis.com ramsan at compassis.com
c/ Tuset, 8 7-2 tel. +34 93 218 19 89
08006 Barcelona, Spain fax. +34 93 396 97 46