CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Meshing & Mesh Conversion

[Other] OpenFOAM - structured or unstructured Grids ?

Register Blogs Community New Posts Updated Threads Search

Like Tree10Likes

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 13, 2017, 07:07
Default
  #21
New Member
 
Bharadwaj Bhushan
Join Date: Mar 2017
Posts: 19
Rep Power: 9
Bharath Bhushan is on a distinguished road
Quote:
Originally Posted by alberto View Post
As Mark said, OF can deal with polyhedral grids. You're probably referring to some discussion where using tetrahedral grids problems appeared.
OpenFOAM is, in my experience, quite sensitive to the mesh quality, so you need to be a bit careful when generating the grid to avoid very skewed cells. Many of the users I saw reporting problems were using salomé or gmsh to generate their grid. They're good tools, but, in my experience, their meshing capabilities are not always the best for finite-volume codes.



Yes, many. Just take a look at the slides of workshops and conferences about OpenFOAM.

Best,
hello Alberto,
please can you suggest me which meshing tool is best suited for OpenFoam ?

thank you
Bharath Bhushan is offline   Reply With Quote

Old   September 20, 2018, 17:56
Default unstructured grid with chemistry solver?
  #22
Member
 
Patti Michelle Sheaffer
Join Date: Sep 2018
Posts: 55
Rep Power: 8
pattim is on a distinguished road
Has anyone tried using 3D tet unstructured grids with an OpenFOAM chemistry density-based solver? Nice tet grids are pretty easy to make with Salome... I have done some FV hypersonic combustion with other solvers after Salome meshing, but it's a bit tricky. Commercial meshers usually make more numerically robust meshes.


Thank You Very Much,
PattiM

Last edited by pattim; September 21, 2018 at 02:17.
pattim is offline   Reply With Quote

Old   November 25, 2018, 00:18
Default
  #23
New Member
 
Robert
Join Date: Nov 2018
Posts: 8
Rep Power: 8
openfoamtutorials is on a distinguished road
Quote:
Originally Posted by Bharath Bhushan View Post
hello Alberto,
please can you suggest me which meshing tool is best suited for OpenFoam ?

thank you
My tool of choice is Gmsh for relatively simple geometries. My favorite part about it is that you are not required to use a GUI; you can script the geometry and mesh entirely, allowing for quick changes and batch runs of parameter variations (e.g. angle of attack, sizing, etc.).
openfoamtutorials is offline   Reply With Quote

Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
OpenFOAM course for beginners Jibran OpenFOAM Announcements from Other Sources 2 November 4, 2019 09:51
Convert mesh from unstructured Openfoam to structured ayushmorx Mesh Generation & Pre-Processing 0 October 10, 2017 12:24
Structured and Unstructured mesh Jingwei FLUENT 0 March 2, 2009 22:29
Structured versus unstructured grids Siobhan O'Callaghan FLUENT 0 April 9, 2002 10:25
unstructured vs. structured grids Frank Muldoon Main CFD Forum 1 January 5, 1999 11:09


All times are GMT -4. The time now is 04:17.