CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > ANSYS Meshing & Geometry

[GAMBIT] Mixing faces that constitute a velocity inlet boundary condition

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 10, 2013, 12:05
Default Mixing faces that constitute a velocity inlet boundary condition
  #1
Senior Member
 
Bobi
Join Date: Oct 2012
Posts: 286
Rep Power: 5
babakflame is on a distinguished road
Dear Buddies
Hi

I have divided a velocity inlet boundary condition to three faces. There is no problem with the grid. However for crowding out the grid, I want to do an operation like merging these faces so as to observing one circle instead of two half circles and a square in the middle. I had found a solution for this issue; However I have forgot it now. Any hint is appreciated.
More information: It's a 3D grid and after creating the 2D surface grid;I swaped through an identified edge to create the 3D grid.
Regards
Bobi
babakflame is offline   Reply With Quote

Old   July 11, 2013, 07:03
Default
  #2
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,973
Rep Power: 30
-mAx- will become famous soon enough
I don't understand your problem.
If you have 3 surfaces and they should set as velocity inlet, then you have 2 options:
-all 3 surfaces as one BC --> you will see only one surface
-each surface as one BC --> you will see 3 surfaces
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   July 12, 2013, 02:31
Default
  #3
Senior Member
 
Bobi
Join Date: Oct 2012
Posts: 286
Rep Power: 5
babakflame is on a distinguished road
Hi Max

Let me explain clearer:
when we sweep our faces through a specified edge that has an identified mesh on it; we can create our 3 dimensional grid . After this step, we can see undue lines that sweeping has created in the interior region. My question: Is there any way to get rid of these lines In the interior region? From your response, I infer that after defining boundary conditions properly; these undue lines due to sweeping disappear automatically? Am I right buddy?

Regards
Bobi
babakflame is offline   Reply With Quote

Old   July 12, 2013, 03:26
Default
  #4
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,973
Rep Power: 30
-mAx- will become famous soon enough
can you post pictures?
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   July 13, 2013, 03:07
Default
  #5
Senior Member
 
Bobi
Join Date: Oct 2012
Posts: 286
Rep Power: 5
babakflame is on a distinguished road
Hi max

I have attached a picture. As it can be seen in the picture, After sweeping through the central edge (I have deleted this line); the vertices of the middle square create four lines. Is there any way to get rid of these interior lines.
Although I Know that these interior lines does not disturb in defining boundary conditions.

Regards
Bobi
Attached Images
File Type: png pic.png (60.2 KB, 3 views)
babakflame is offline   Reply With Quote

Old   July 17, 2013, 01:32
Default
  #6
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,973
Rep Power: 30
-mAx- will become famous soon enough
if all your volumes are well connected, then the internal surfaces won't give you any problem, since Gambit will treat them as interior.
So connect Faces All
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- 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
Radiation interface hinca CFX 15 January 26, 2014 18:11
Difficulty in calculating angular velocity of Savonius turbine simulation alfaruk CFX 8 December 3, 2013 17:51
How to set up the inlet boundary condition for a low pressure case? beastieboys6 FLUENT 3 April 10, 2012 22:46
Velocity inlet boundary condition for porous medium Chander CFX 3 March 11, 2012 22:18
Convective Heat Transfer - Heat Exchanger Mark CFX 6 November 15, 2004 16:55


All times are GMT -4. The time now is 05:01.