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[ANSYS Meshing] Aircraft Cabin Model Periodic Boundary Condition Problem

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Old   October 5, 2016, 15:38
Default Aircraft Cabin Model Periodic Boundary Condition Problem
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Hossam El-Maghraby
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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, 12 views)
File Type: jpg Aircraft Cabin Meshing.jpg (133.7 KB, 10 views)

Last edited by wanted89; October 16, 2016 at 17:03. Reason: Photos didn't load
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Old   October 11, 2016, 11:57
Default Any help?
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Hossam El-Maghraby
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Hi everyone,

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

Regards,
wanted89
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Old   October 16, 2016, 17:06
Default Modification in the attached photos
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Hossam El-Maghraby
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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
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aircraft design, meshing 3d, periodic bc


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