[Gmsh] Meshing of internal surface loops in 3D (Andrey)
Louis Gagnon
louis.gagnon.10 at ulaval.ca
Wed Jun 17 04:42:39 CEST 2009
Dear Audrey,
In other worlds: a perfect world you would just wish for it and it would
happen, a spiritual world you would pray for it,.. but, read below for
my serious answer :-p
define the inner volume as a volume too. Right know you only define the
volume made of the outside box minus the inside one and that is why the
inside on is not meshed.
Regards,
-Louis
On Wed, 2009-06-17 at 01:07 +0200, gmsh-request at geuz.org wrote:
> Send gmsh mailing list submissions to
> gmsh at geuz.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://www.geuz.org/mailman/listinfo/gmsh
> or, via email, send a message with subject or body 'help' to
> gmsh-request at geuz.org
>
> You can reach the person managing the list at
> gmsh-owner at geuz.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of gmsh digest..."
>
>
> Today's Topics:
>
> 1. Re: Volume creation problem (Danny Holstein)
> 2. Meshing of internal surface loops in 3D (Andrey)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 16 Jun 2009 16:51:08 -0400 (EDT)
> From: Danny Holstein <dgholstein at embarqmail.com>
> Subject: Re: [Gmsh] Volume creation problem
> To: Christophe Geuzaine <cgeuzaine at ulg.ac.be>
> Cc: gmsh at geuz.org
> Message-ID:
> <1316304540.168881245185468587.JavaMail.root at md14.embarq.synacor.com>
> Content-Type: text/plain; charset="utf-8"
>
> Christophe;
>
> The attached file creates 4 additional points around point 3 (as well as others) that appear to be truncation issues in creating the solid of revolution. How do I keep that from occurring?
>
> ...Dan
>
> ----- Original Message -----
> From: "Christophe Geuzaine" <cgeuzaine at ulg.ac.be>
> To: "Danny Holstein" <dgholstein at embarqmail.com>
> Cc: gmsh at geuz.org
> Sent: Sunday, June 14, 2009 3:11:54 PM GMT -05:00 US/Canada Eastern
> Subject: Re: [Gmsh] Volume creation problem
>
> Danny Holstein wrote:
> > All;
> >
> > I created what I thought was a closed volume, but GMSH doesn't agree. I've attached the offending file, does anyone know why it's not working?
> >
>
> It looks like your volume is not closed: see e.g. lines 29 and 272.
>
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: gun.geo
> Type: application/octet-stream
> Size: 4310 bytes
> Desc: not available
> Url : http://www.geuz.org/pipermail/gmsh/attachments/20090616/34f9cf9a/attachment-0001.geo
>
> ------------------------------
>
> Message: 2
> Date: Wed, 17 Jun 2009 02:47:08 +0400
> From: Andrey <spiritualworlds at mail.ru>
> Subject: [Gmsh] Meshing of internal surface loops in 3D
> To: gmsh at geuz.org
> Message-ID: <4A3820EC.5060209 at mail.ru>
> Content-Type: text/plain; charset="utf-8"
>
> Dear GMSH community!
>
> I try to state my question.
>
> For this purpose I prepared a simple geometry in attached boundary.geo.
>
> The geometry is a surface in 3D space and consists of two rectangular boxes:
>
> External box of size 2x2x2 and internal box of size 1x1x1.
>
> The last one is fully located inside the first.
>
> If I pass this geometry to gmsh and ask it to make a 3D mesh of the volume:
>
> gmsh.exe -3 boundary.geo -o mesh.mesh -format mesh -order 1 -algo iso
> -optimize
>
> then I get a 3D-mesh of the space between 1-st and 2-nd boxes, the space
> inside small box remains empty. Changing the orientation of internal box
> surface I hope to get the space inside small box also meshed but fail.
> See attached meshed_boxes.png
>
> In other worlds: how to change boundary.geo to force gmsh to mesh
> interior space inside internal surface loop?
>
> Note, that the problem doesn?t exist for 2D meshes ? changing the
> orientation of internal line loop it is possible to get interior place
> meshed or non-meshed.
>
> Best regards,
>
> Andrei
>
>
> -------------- next part --------------
> An embedded and charset-unspecified text was scrubbed...
> Name: boundary.geo
> Url: http://www.geuz.org/pipermail/gmsh/attachments/20090617/840beaac/attachment.geo
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: meshed_boxes.png
> Type: image/png
> Size: 59529 bytes
> Desc: not available
> Url : http://www.geuz.org/pipermail/gmsh/attachments/20090617/840beaac/attachment.png
>
> ------------------------------
>
> _______________________________________________
> gmsh mailing list
> gmsh at geuz.org
> http://www.geuz.org/mailman/listinfo/gmsh
>
>
> End of gmsh Digest, Vol 77, Issue 27
> ************************************
>