[GiDlist] Re: Can't generate surface mesh or even volume

Moderator: GiD Team

Henry Liu

[GiDlist] Re: Can't generate surface mesh or even volume

Postby Henry Liu » Thu Oct 14, 2004 4:55 pm

Hi again, everyone

I am a new user of GiD. I still got the question about
how to generate volume mesh.

I have a surface geometry (see attachment). I can't
generate surface mesh through -Meshing -Generate.
But I can generate volume entity (by creating volume
by -Geometry -Create - volume -search). When I am
trying to generate volume mesh through -Meshing
-Generate, it gave me wrong message in a pop-up
window as below.

------------------------------------------
1 wrong volumes
Num Description
1 Contour element 169 is not correct
------------------------------------------

Could anyone tell wether this is due to wrong surface
geometry, or is there any way out to fix it manually?

Thanks again!

Tom

=====


______________________________________________________________________
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Enrique Escolano

[GiDlist] Re: Can't generate surface mesh or even volume

Postby Enrique Escolano » Thu Oct 14, 2004 8:24 pm

In general, is more difficult to generate a mesh over a "surface mesh" than
over
a NURBS surface (because a NURBS is more smooth).

If it's possible, it's recommended to avoid to work with "surface-meshes" as
geometric entity.
In your case, for example, it's trivial to delete all surfaces, and
reconstruct it from the boundary:
Geometry-Create-Nurbs surface-Automatic, and select with 3, 4 and 5
sides.
Then create a volume selecting all boundary surfaces, and can generate a
mesh without problems.

I attach your file modified with this procedure.

Regards
Enrique Escolano

----- Original Message -----
From: "Henry Liu" masterdailymemo at yahoo.ca
To: gidlist at gatxan.cimne.upc.es
Sent: Thursday, October 14, 2004 5:27 PM
Subject: [GiDlist] Re: Can't generate surface mesh or even volume mesh by
surface geometry


Hi again, everyone

I am a new user of GiD. I still got the question about
how to generate volume mesh.

I have a surface geometry (see attachment). I can't
generate surface mesh through -Meshing -Generate.
But I can generate volume entity (by creating volume
by -Geometry -Create - volume -search). When I am
trying to generate volume mesh through -Meshing
-Generate, it gave me wrong message in a pop-up
window as below.

------------------------------------------
1 wrong volumes
Num Description
1 Contour element 169 is not correct
------------------------------------------

Could anyone tell wether this is due to wrong surface
geometry, or is there any way out to fix it manually?

Thanks again!

Tom

=====


______________________________________________________________________
Post your free ad now! http://personals.yahoo.ca
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