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[GAMBIT] How to name inner domain in Gambit

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Old   October 23, 2013, 10:54
Default How to name inner domain in Gambit
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izna O'connor
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hello..

I have a large domain D.. I have one shape,S ( exotic shape) in my large domain.. I had drawn another small domain,X to surround my exotic shape so that i can mesh finest mesh around this and coarser elsewhere..

In gambit i had done X subtract S, then i retain both faces.. Next I did, D subtract X...

I had meshed my small Domain X finely and the bigger coarse.. everything was fine..

problem is my boundary condition.. what do I name the inner domain?
please help..
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Old   October 24, 2013, 00:51
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don't give any name of internal domain.
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Old   October 24, 2013, 02:04
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hello
If i do not name it.. In openFoam, it is taken as default Wall..

Please advice.
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Old   October 24, 2013, 02:14
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You were talking about inner domain. So I understand a volume.
Then I assume you have wall between your default domain D and you refined domain X.
This is typical connectivity problem.
So you have to connect those surfaces
A picture is always welcomed
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Old   October 24, 2013, 02:16
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hi its in 2D..
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Old   October 24, 2013, 02:30
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inner shapes are wall..

Last edited by izna; October 25, 2013 at 02:58.
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Old   October 24, 2013, 08:13
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If you are working in 2d then bc are set on edges. (so you have to connect your edges)
I don't see anything on your picture
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Old   October 24, 2013, 14:30
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when i do connec the edges i obtain the attached error..

I want wall only the buildings..
i have subtract the small square( domain) from the big domain.. and subtract the buildings from the small square domain..

Last edited by izna; October 25, 2013 at 03:01.
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Old   October 25, 2013, 00:34
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upload your dbs file in a share server, I'll check
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Old   October 25, 2013, 03:40
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Ok as I thought: you didn't have any split.
So:
- go to face substract, and select face.2 as "face", then select all faces (except face .2 and face.1) in "substract faces"

-Now you have only 2 faces: face.2 (the one you generated with substract) and face.1, which you will use for the split

-go to face split, and selet face.2 in "face", and face.1 in "faces"

Now your domain is ready, you can mesh
Untitled.jpg
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Old   October 25, 2013, 03:47
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hi
you mean now on doing this, i can name my edges and not bother with the inner square?
also in

Quote:
go to face split, and selet face.2 in "face", and face.1 in "faces"
in my version of gambit, i have both as face.. firstone face and secondone also face.. whch one do i put as face2 and which one face1
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Old   October 25, 2013, 04:02
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you just have to select the faces:
the first ("face") is the surface from which you want to generate a split.
The other ("faces") is the surface (or surfaces) you want to use for splitting
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Old   October 25, 2013, 04:05
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So for me
face2 is the first and face1 is the second..

Thankssss
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Old   October 25, 2013, 04:17
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Quote:
Originally Posted by -mAx- View Post
-go to face split, and selet face.2 in "face", and face.1 in "faces"
Also for me...
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Old   October 26, 2013, 16:05
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Hi max

Hwo do i close my volume?
when i do stitch volume, i got the error of
Quote:

cannot create acis body. is this an open shell?
I have all the required face..
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Old   October 28, 2013, 02:02
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you have to create each volume and then again the substract and split stuff (but with volume)
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Old   October 28, 2013, 09:13
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hi max
thanks for a reply..
When i create volumes.. Ie stitch all my face together.. i obtain the Acis error..
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Old   October 29, 2013, 02:56
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give me an example
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