Gmesh error reading consecutive implicit domain meshing

User Help
#1

Hello everybody,

I am working on a dynamic problem where I have to update a 3D discretization as my internal interfaces move. The issue I face is that when I want to update the previous mesh with a new signed distance field I get the following error:

# Error: MMG5_loadMshMesh_part2: unexpected type of element (2029)

and after that the program closes without generating the new mesh. As far as I can tell, the element that is supposed to be causing the problem is an arbitrary tetrahedron.

It is worth to mention that this only happens with the -ls option enabled. I have no problem whatsoever in generating a sequence of meshes from a length scalar field. In addition, if I transform the input mesh (previous time step) from .msh into .vtk and back to .msh the problem disappears.

Thank you in advance.
Best regards,
José Antonio.

PS: I am using the MMG3d, Release 5.3.8 (Apr. 10, 2017) compiled with Microsoft Visual C++ Compiler 2017 under Windows 10.

Edit: The error is reproducible when running mmg3d.exe cube1.msh -ls on this (909.8 KB) mesh generated by mmg3d.

#2

Hi Jose,

Thank you for using Mmg and thank you for this bug report.

I have commited a patch that must fix your issue (master branch of the project). Please, let me know if it works for you.

Regards,

Algiane

#3

Hello Algiane,

It works perfectly now. Thank you very much for the (awesomely) fast response and for the effort you make to bring such a nice piece of software to the community.

Best regards,
José Antonio.

#4

Your welcome.

The hotfix is now released (mmg-5.3.11).

#5