[Gmsh] Error after Mesh Conversion to OpenFOAM

[Christophe Geuzaine]

> On 10 Oct 2020, at 03:57, Razon kumar <razonkumarku at gmail.com> wrote:
> 
> Hi all,
> 
> Hope everyone is doing well in this tough time. Actually, I am working on to investigate the natural convection flow inside an open cavity. For this purpose, I made an unstructured mesh using Gmsh and then convert it to OpenFOAM. The mesh looks ok in Gmsh UI without having any error. However, while converting it to OpenFOAM and checking the mesh quality, it shows error (still 2 error for this case). I am not a super expert on Gmsh environment but can do little things. I was unable to find the solution so far after trying a couple of days. I followed this group for a long time but this is my second post here. I am really optimistic that someone from this group can find whats the actual problem in my geo file. 
> 
> Please see the attached geo and error file if you are interested to help me. I will appreciate any help regarding this issue. Thanks in advance.  

The mesh looks ok to me. But indeed you extrude the surface mesh with a singe layer of elements with a height that is much larger than the size of the smallest triangles, leading to very elongated prisms...

Christophe


> Cheers,
> 
> Razon 
> 
> <cavity.geo><error.png>_______________________________________________
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— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://people.montefiore.ulg.ac.be/geuzaine