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vasu_srivastava

Periodicity Errors in 3D

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Hi,

 

I have been working in flux 2d for the past two months. I am now trying to shift to 3d models to explore acoustics and thermal aspects of the induction motor model. I'm using the induction motor overlay and mesh using the mesh domain command with some changes in the aided mesh.

 

I have received the following error message:

 

The PERIODICITY PeriodicityNumberZaxis can not be taken into account

Faces of the constraints without reference face:

234  1686  317  502  1386  1389  2063  2014  1489  1700  1753  1854  777  1172  830  1154  1158  865

use the LINKED mesh generator

 

I had encountered similar errors in the 2D modeling as well which used to get solved using a linked mesh line. I tried the same method using the mesh generator and linked the above faces, but it isn't working. I also tried the method of using a complete infinite box which also didn't work. On checking the mesh I received the message attached below which divided the faces into three groups. So I tried applying three different mesh generators and linked each of the three groups separately, which again resulted in the same periodicity error. Also on using the mesh generator I get the message that the faces 1382 and 1686 are linked to themselves.

 

Also how do you set individual faces or volumes that were set as invisible back to visible?

 

Thank you for any time and effort put into helping me out in advance.

mesh issue periodicity.JPG

mesh issue.PNG

motor model.JPG

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Hi,

As you understand, the error message means that there is missing a link between some faces. Before completing the infinite box, you need to create a line between two points (see the attached picture: red line). This means that you divide this face in two faces. Once the face is split in two, you use the command “complete infinite box’.

Hope this will help.

Best regards.

Infinite_box.doc

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Hi,

 

Thank you for your quick reply.

 

I had tried that earlier, but whenever I make that line, it shows a general error and a line intersection. If I create the infinite box in the overlay, it doesn't create the winding coils.

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