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[ICEM] A few ideas for blocking in this case? ( tube submerge in cylinder)

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Old   April 30, 2012, 06:49
Talking A few ideas for blocking in this case? ( tube submerge in cylinder)
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Hi everyone!

I have a dual fluidized bed project with CFD simulation ( 2D simulation done!).

and now is 3D. This is my case ( this tube is downcomer from cyclone)







My ICEM files :http://www.mediafire.com/download.php?mtatpynzozwnmie


thanks !
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Old   May 2, 2012, 03:54
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Something like this. Сan you attach a geometry file?
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File Type: jpg TRCL.jpg (30.8 KB, 52 views)
File Type: png TRCL1.PNG (23.6 KB, 51 views)
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Last edited by Ralen; May 2, 2012 at 04:36.
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Old   May 2, 2012, 05:33
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Quote:
Originally Posted by Ralen View Post
Something like this. Сan you attach a geometry file?
Thank you so much!

Can you attach the block file?

p/s: About the full geometry file, Sorry I can't post because this project is confidential
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Old   May 2, 2012, 05:53
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this project is confidential
Ok! But I don't understand the geometry of the tube. The tube have 3 independent flows, separated by a thin walls?
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Old   May 2, 2012, 06:36
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create another o-grid around the pipe to better control the quality.
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Old   May 2, 2012, 06:42
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Quote:
Originally Posted by Ralen View Post
Ok! But I don't understand the geometry of the tube. The tube have 3 independent flows, separated by a thin walls?
I don't understand your mean! It's just a tube ( redirect at the bottom) that discharge material into cyclone. The surface of tube is set as wall when export to Fluent
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Old   May 2, 2012, 07:00
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Quote:
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create another o-grid around the pipe to better control the quality.
You mean o-grid 4 blocks outside of pipe?
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Old   May 2, 2012, 07:03
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Quote:
Originally Posted by DungPham View Post
I don't understand your mean! It's just a tube ( redirect at the bottom) that discharge material into cyclone. The surface of tube is set as wall when export to Fluent
Why then need 3 o-grids for the tube (inside tube)? Just one o-grid.
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File Type: zip tube submerge in cylinder.zip (49.2 KB, 9 views)
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Old   May 2, 2012, 07:38
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Quote:
Originally Posted by Far View Post
create another o-grid around the pipe to better control the quality.
Like this?
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File Type: jpg TRCL2.jpg (46.9 KB, 34 views)
File Type: png TRCL3.PNG (56.2 KB, 39 views)
File Type: jpg TRCL4.jpg (96.0 KB, 33 views)
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Old   May 2, 2012, 12:00
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yes, it is. By moving the vertices things will be much better(can be done at latter stages when topology is freezed).
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Old   May 3, 2012, 09:35
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Ralen's first topology is good...

But his second one is not what Far was talking about... Don't split the Ogrid on the outer pipe, split the Ogrid for the inner pipe...

Actually, when you first make that inner ogrid, set it up for being a bit larger than the inner pipe (so it is half outside and half inside the pipe)... Then split that Ogrid and project the middle to the pipe...

This way you will have aligned layers both inside and outside your inner pipe...
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