[Gmsh] 答复: apply background mesh to non-planar surface

Jin Yao jinyao at outlook.com
Sat Jun 10 15:48:21 CEST 2017

Hi Prof. Christophe Geuzaine,

Thanks for your attention.

Can you elaborate this sentence?  "Put your background field on a 3 grid that covers your surface"

My background field is a 2-dimension field on the surface, how to put it on a 3 grid?

发件人: Christophe Geuzaine <cgeuzaine at ulg.ac.be>
发送时间: 2017年6月7日 7:42
收件人: Jin Yao
抄送: gmsh at onelab.info
主题: Re: [Gmsh] apply background mesh to non-planar surface

> On 4 Jun 2017, at 20:06, Jin Yao <jinyao at outlook.com> wrote:
> Hi experts,
> Is it feasible to generate background mesh to non-planar surface, such as the surface of a  sphere?
> For planar surface, it is easy to generate a background mesh, which consists of scalar triangles. But for non-planar surface, the inner points of triangles are not on the surface even when the vertices of scalar triangles lie on the surface.
> Could anyone suggest a workaround if there's no direct solution? Thanks

Put your background field on a 3 grid that covers your surface: Gmsh will happily interpolate the volume data on the non-planar surface.

> Yao
> Sent from my phone
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science

Free software: http://gmsh.info | http://getdp.info | http://onelab.info
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GetDP is a free finite element solver using mixed elements to discretize de Rham-type complexes in one, two and three dimensions. The main feature of GetDP is the ...

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