[Gmsh] [Question] From 3D linear mesh to 3D quadratic mesh

[Christophe Geuzaine]

> On 01 Dec 2015, at 18:16, Feilin Jia <jiafeilin1990 at gmail.com> wrote:
> 
> Dear all,
> 
> I am a Gmsh user. Recently, I encounter a problem about generating a
> quadratic 3D mesh. I write a .geo file, in which I define some points,
> lines, line loops and then form a surface, then I use extrude to
> obtain the 3D mesh. Then I open this .geo file in Gmsh and click on
> the "Mesh -- define -- 3D", then it will generate a linear 3D mesh,
> which is good. But then when I click on the "set order 2", some weird
> problems occur. Some lines of elements go across the solid wall. The
> figures are attached. I do not know how to solve this problem...Hope
> for your generous help!

This is clearly a bug on our side. Could you send (maybe a part of) the geometry so we can track it down?

Christophe


> 
> Best regards,
> Feilin Jia
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine

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