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Old   February 28, 2012, 08:45
Default Deleting 2d region
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Is there a way of deleting a 2d mesh region in cfx pre.

My model is too huge to remesh, if there is a way to delete 2d region in cfx pre it would be easier

pl. do reply asap
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Old   February 28, 2012, 18:19
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You do not need to delete it. Just don't use it for anything and then it will not be included in the def file.
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Old   February 28, 2012, 23:08
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Thanks ghorrocks,

But not using it, does not consider it as a default BC i.e., a wall in pre ?
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Old   February 29, 2012, 01:43
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Thank u ghorrocks

I tried it, it is working. I had a perception that unused 2d regions will be considered as walls.

Thanks
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Old   March 4, 2012, 03:12
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could you please tell me how it's working?
unused faces appear in domain default and i cant delete or remove it. even when i turned off
Automatic Default Domain and Automatic Default Interfaces.
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Old   March 4, 2012, 05:06
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You delete the default domain and regenerate your own which only includes the ones you want - leave out the ones you do not want.
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Old   March 4, 2012, 05:14
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hi hosseinhgf,
U will not be able to delete it. In my case, 2d regoin was already included in a user defined wall. So, there was no default domain default. I have just redefined the wall checking out the 2d region
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Old   March 4, 2012, 17:35
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Yes, you can delete it. I have done it many times.

Also you can disable generation of the default domain so it starts with no domains defined so this might make things easier.
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Old   March 5, 2012, 04:05
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In “Multiphase Flow in a Mixing Vessel” tutorial when I use “MultiphaseMixer.pre” file in “Play Tutorial” just two face of blade defined as interface and the other faces not defined (used) in any boundary. But I cant do it manually. And if some faces weren’t in any boundary then are they “interior (interface)” faces?
I couldn’t delete these faces.
Imagine there is two cube that the smaller Is inside the bigger. Then you have bigger cube with 12 faces and the smaller cube with 6 faces. In pre you must define the faces between two cube; Wall or interface or anything you want but you can’t ignore it.
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Old   March 5, 2012, 19:40
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Ok I found what happened. These Faces (impeller faces that isn’t red in pic) automatically defined as interface that didn’t appear in pre but you can manually defined them. So you can’t delete these faces from “domain default” but you can ignore them because they automatically defined as interface (general connection, Conservative Interface Flux).
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File Type: png MultiphaseMixe2r.png (18.7 KB, 7 views)
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