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

[ANSYS Meshing] Aircraft Cabin Model Periodic Boundary Condition Problem

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 5, 2016, 14:38
Default Aircraft Cabin Model Periodic Boundary Condition Problem
  #1
New Member
 
Hossam El-Maghraby
Join Date: Oct 2013
Posts: 3
Rep Power: 5
wanted89 is on a distinguished road
Dear CFD Online Community,

I'm currently building and simulating a simple aircraft cabin model on ANSYS 17.0 to use it as validation for my upcoming work on airflow. The geometry of the model built in DesignModeler is attached.

The meshing for the model is done in ANSYS Meshing using tetrahedral elements only (2212365 tetrahedrons). A photo for the meshing is attached.

The problem I'm facing right now is that I want to create a translational periodic boundary between the back zone (shown in purple in the photo) and the front zone, which has the same geometry of the back, to have the flow in this section of the cabin repeated indefinitely so as to simulate the realistic whole cabin condition, but, unfortunately, I can't . This is because when I try to use the command line (mesh>modify-zones>make-periodic) in Fluent after importing the mesh, it gives me an error which reads: "Number of elements does not match between zone 6 and 7", where zones 6 and 7 are the front and back zones of the cabin, respectively.

My question is: how can I have the two zones (front & back) with the same exact number of meshing elements to make the translational periodic BC between them a success?

Thanks for your patient reading, and waiting for your useful replies.

Regards,
wanted89
Attached Images
File Type: jpg Aircraft Cabin.jpg (72.2 KB, 8 views)
File Type: jpg Aircraft Cabin Meshing.jpg (133.7 KB, 7 views)

Last edited by wanted89; October 16, 2016 at 16:03. Reason: Photos didn't load
wanted89 is offline   Reply With Quote

Old   October 11, 2016, 10:57
Default Any help?
  #2
New Member
 
Hossam El-Maghraby
Join Date: Oct 2013
Posts: 3
Rep Power: 5
wanted89 is on a distinguished road
Hi everyone,

Anyone can give me a little help or hint on this issue, please?

Regards,
wanted89
wanted89 is offline   Reply With Quote

Old   October 16, 2016, 16:06
Default Modification in the attached photos
  #3
New Member
 
Hossam El-Maghraby
Join Date: Oct 2013
Posts: 3
Rep Power: 5
wanted89 is on a distinguished road
Dear all,

I attached the photos cited in the text for my geometry and meshing as the links were not accessible by everyone.

Regards,
wanted89
wanted89 is offline   Reply With Quote

Reply

Tags
aircraft design, meshing 3d, periodic bc

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
Velocity vector in impeller passage ngoc_tran_bao CFX 24 May 3, 2016 21:16
Problem in setting Boundary Condition Madhatter92 CFX 12 January 12, 2016 05:39
Radiation in semi-transparent media with surface-to-surface model? mpeppels CFX 10 June 16, 2015 15:48
An error has occurred in cfx5solve: volo87 CFX 5 June 14, 2013 17:44
Bug in fvc::grad() and periodic boundary condition JBUNSW OpenFOAM 3 November 15, 2012 04:09


All times are GMT -4. The time now is 03:06.