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

Unknown walls generated when import .msh file to fluent.

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

Like Tree1Likes
  • 1 Post By Bionico

Reply
 
LinkBack Thread Tools Display Modes
Old   October 12, 2012, 05:34
Default Unknown walls generated when import .msh file to fluent.
  #1
New Member
 
Bryan
Join Date: Aug 2011
Posts: 2
Rep Power: 0
mdw0821 is on a distinguished road
hello, guys.
I have a problem and need a help.
I made geometry like the picture, generated mesh and tried to calculate with fluent.
but the flow was interrupted by some walls.
I didn't make walls. (picture attached)
but fluent made some walls when the .msh file was imported.
I want to delete the walls or make them like interior.
how can I solve this problem?
please save me...
Attached Images
File Type: jpg K-4.jpg (33.3 KB, 11 views)
File Type: jpg K-21.jpg (94.1 KB, 10 views)
File Type: jpg K-22.jpg (31.5 KB, 9 views)
mdw0821 is offline   Reply With Quote

Old   October 12, 2012, 07:37
Default
  #2
Member
 
Gonzalo
Join Date: Mar 2011
Location: Argentina
Posts: 90
Rep Power: 6
gfoam is on a distinguished road
HI:
Make sure you had created all the Named Selections in Ansys Meshing that you need to declare, and when you inport the mesh into FLUENT, look at the list of mesh parts and display them. If some of the interior faces of the ducts have a wall BC's, chage it as interior faces, but by default FLUENT must import them as interior faces as well
Gonzalo

Last edited by gfoam; October 12, 2012 at 08:33.
gfoam is offline   Reply With Quote

Old   October 15, 2012, 19:59
Default
  #3
New Member
 
Bryan
Join Date: Aug 2011
Posts: 2
Rep Power: 0
mdw0821 is on a distinguished road
Hi, Gonzalo.
I made named selections all over the body parts.
And walls didn't be generated inside when I import the mesh into fluent. But the problem was not cleared. Flows still couldn't go out. Then I focused on connections. Geometry and mesh model was comprised with many parts and contact regions were generated automatically to connect between parts. Then I made contact regions manually and the problem was solved.
I can make contact regions easily because of the named selections. If I didn't make named selections clearly, I cannot try to make contact regions manually because the model has so many parts and faces.
I'm so grateful for your advice. Thank you.
Bryan.
mdw0821 is offline   Reply With Quote

Old   October 16, 2012, 02:50
Default
  #4
Senior Member
 
Bionico's Avatar
 
Flavio
Join Date: Sep 2011
Location: Brescia, Italy
Posts: 162
Rep Power: 4
Bionico is on a distinguished road
Hi mdw,
you can also put all the body pieces in one part (if you are using Workbench it's quite simple) in order to avoid the connections and have a conformal mesh

Regards
gfoam likes this.
__________________
Bionico
Bionico is offline   Reply With Quote

Old   October 16, 2012, 13:32
Default
  #5
Member
 
Gonzalo
Join Date: Mar 2011
Location: Argentina
Posts: 90
Rep Power: 6
gfoam is on a distinguished road
Quote:
Originally Posted by Bionico View Post
Hi mdw,
you can also put all the body pieces in one part (if you are using Workbench it's quite simple) in order to avoid the connections and have a conformal mesh

Regards
yep, Bionico's right, to do that, right click on the bodies that conform the pipe in DesignModeler and click on Create New Part. Then when you import the geometry into Ansys Meshing you can mesh it without having so much connections. Regards.
Gonzalo
gfoam 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
friction forces icoFoam ofslcm OpenFOAM 3 April 7, 2012 10:57
"parabolicVelocity" in OpenFoam 2.1.0 ? sawyer86 OpenFOAM Running, Solving & CFD 21 February 7, 2012 11:44
.msh file cann't be by Fluent nchuche FLUENT 1 June 29, 2010 10:38
Errors running allwmake in OpenFOAM141dev with WM_COMPILE_OPTION%3ddebug unoder OpenFOAM Installation 11 January 30, 2008 20:30
compressible two phase flow in CFX4.4 youngan CFX 0 July 1, 2003 23:32


All times are GMT -4. The time now is 02:01.