CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM

Possible Bug for Imported Mesh

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   October 25, 2011, 09:23
Default Possible Bug for Imported Mesh
  #1
Member
 
Marta's Avatar
 
Marta Lazzarin
Join Date: Jun 2009
Location: Italy
Posts: 69
Rep Power: 8
Marta is on a distinguished road
Hi Foamers! I have tried to simulate the pressure drop induced by an actuator disk using a mesh imported from Fluent format .msh.
I have named the actuator surfaces as 'fan' before importing them into OpenFOAM and they have correctly been recongized as cyclic surfaces. Then, I have selected for them the 'fan' type in the pressure file p and applied the desired pressure jump.

What I saw, with both versions 1.7.1 and 2.0.1, is that when I import the mesh from Fluent, apparently the faces numbering is wrong, because the fan condition does not reproduce a pressure jump, which is instead well visible when I generate the mesh and geometry using the blockMesh utility.

Since this problem only appears when I use imported meshes, I have thought that it could be related to a wrong correspondance between the omologous surfaces of the cyclic boundary faces, rather that to something wrong with the boundary condition itself (especially because the fan boundary works pretty well with internally generated meshes).
I have attached two different pictures: the first reports the results obtained with blockMesh (above) and with fluent (below) and the other presents the results obtained with the imported mesh from Fluent.

Does any of you have any experience in this kind of a problem?
Thanks a lot!

pressureAbove=blockMeshBelow=Fluent.jpg

pressureImportedMesh.jpg

Marta
Marta is offline   Reply With Quote

Reply

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ICEM] Negative volume error in hybrid mesh siw ANSYS Meshing & Geometry 4 September 3, 2014 05:25
how to set periodic boundary conditions Ganesh FLUENT 13 January 22, 2014 05:11
Mesh motion with Translation & Rotation Doginal CFX 2 January 12, 2014 07:21
non-smooth mesh Svensson OpenFOAM Native Meshers: snappyHexMesh and Others 11 January 18, 2012 10:13
basic of mesh refinement arya CFX 4 June 19, 2007 12:21


All times are GMT -4. The time now is 05:41.