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-   -   [GAMBIT] change 3d to 2d (http://www.cfd-online.com/Forums/ansys-meshing/120553-change-3d-2d.html)

flow_CH July 9, 2013 11:19

change 3d to 2d
 
1 Attachment(s)
Hello.

I have a 3d model in gambit. I want to use part of that model for using in 2d of fluent. I am erasing other edges and faces but in exporting the mesh gambit give me this error: please see image
I checked "export 2d x-y mesh" but it does not work.
I think since i have z coordinates, it produce the error
How can i change 3d to 2d?
Thanks

-mAx- July 10, 2013 01:10

are all your vertices in (Z=0) plane?

flow_CH July 10, 2013 01:27

Quote:

Originally Posted by -mAx- (Post 438802)
are all your vertices in (Z=0) plane?

No. I said "I think since i have z coordinates, it produce the error". How can i fix that z coordinates to 0 ?

-mAx- July 10, 2013 01:41

Move your surface for having all your vertices with Z=0 (enable Connected Geometry option)

Far July 10, 2013 08:37

Quote:

Originally Posted by flow_CH (Post 438716)
Hello.

I have a 3d model in gambit. I want to use part of that model for using in 2d of fluent. I am erasing other edges and faces but in exporting the mesh gambit give me this error: please see image
I checked "export 2d x-y mesh" but it does not work.
I think since i have z coordinates, it produce the error
How can i change 3d to 2d?
Thanks

For 2d analysis you must consider:

1. does 2d analysis represents your 3d case? For example 2d case may give you good result for the 3d circular duct but it is not the case for transition duct changing its shape from circular to rectangular shape.

2. Your geometry must be on X-Y plane.

3.For axisymmetric case , model axis must be X-axis.

shizijianmo May 2, 2014 06:09

I have the same problem.
All my drawings are on x-z plane, so it's surely a 2D drawing. Is there any way I can change all the drawings directly to x-y plane? Thanks!

-mAx- May 2, 2014 07:22

with copy/move tool, you can rotate all your entities


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