|
[Sponsors] |
Unstructured meshes along the border of refineMesh. |
![]() |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
![]() |
![]() |
#1 |
Member
Katt
Join Date: May 2017
Posts: 30
Rep Power: 9 ![]() |
Hi,
I came across the refineMesh utility of Openfoam to refine specific portions of the domain. I can partially get what I want (i.e. I can refine the region where I want to refine) but along the border of finer and coarser meshes, I see unstructured meshes which I preferably do not want. [Attached Figure]. Reason being, I need to run few additional nonOrthogonalCorrectors just for these few unstructured cells. Any idea on how to get over this issue, K |
|
![]() |
![]() |
![]() |
![]() |
#2 |
New Member
Join Date: Mar 2015
Posts: 16
Rep Power: 11 ![]() |
Hi,
Those cells aren't really like that, it is only the way paraview displays them. You can see how your mesh really is by ticking the "use VTKPolyhedron" option in paraview. |
|
![]() |
![]() |
![]() |
![]() |
#3 |
Member
Katt
Join Date: May 2017
Posts: 30
Rep Power: 9 ![]() |
Thanks,
I am using Paraview version-5.x and can you guide where can i find that option? I came across the following page: https://openfoamwiki.net/index.php/FAQ/Postprocessing Neither of the two mentioned steps in the web-page, worked for me. That is, 1. Extract cells by region: for my 2D case when I apply this filter along the 3rd dimension, I see nothing. Is this filter applicable for 3D cases only? 2. Use VTK Polyhedron: I cannot find this option. I tried in paraviews search engine as well but hasn't shown anything. |
|
![]() |
![]() |
![]() |
![]() |
#4 |
New Member
Join Date: Mar 2015
Posts: 16
Rep Power: 11 ![]() |
The option is called "VTK Polyhedra" in paraview 5.4.0 and "use VTKPolyhedron" in paraview 5.0.1
It both versions, it is next to the "Update GUI" of the case properties. |
|
![]() |
![]() |
![]() |
![]() |
#5 |
Super Moderator
Tobias Holzmann
Join Date: Oct 2010
Location: Bad Wörishofen
Posts: 2,711
Blog Entries: 6
Rep Power: 51 ![]() ![]() ![]() |
Just as an hint. If one used the paraview command and not paraFoam it is named decompose polyhedra. Actually, the line does not exist but the cell (including this line) is not a hexaeder anymore -> it become a polyhedra (FVM).
__________________
Keep foaming, Tobias Holzmann |
|
![]() |
![]() |
![]() |
Tags |
refinemesh, unstructured mesh |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Weird results on Cavity and unstructured meshes | x86_64leon | OpenFOAM Running, Solving & CFD | 12 | March 1, 2016 19:44 |
coefficient calculation (a_P, a_nb) in unstructured meshes vs. structured meshes(FVM) | t.teschner | Main CFD Forum | 2 | January 15, 2015 12:10 |
Velocity/pressure/Temperature blow-up while dealing with unstructured meshes | psosnows | OpenFOAM Bugs | 4 | October 19, 2011 15:48 |
Merge 2 unstructured meshes | vinc | ANSYS Meshing & Geometry | 0 | May 19, 2011 16:14 |
Structure vs unstructured meshes | Des Aubery | Main CFD Forum | 2 | July 25, 2003 23:11 |