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-   -   [ICEM] A few ideas for blocking in this case? ( tube submerge in cylinder) (http://www.cfd-online.com/Forums/ansys-meshing/101281-few-ideas-blocking-case-tube-submerge-cylinder.html)

DungPham April 30, 2012 06:49

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


http://img688.imageshack.us/img688/4664/solidn.png


http://img337.imageshack.us/img337/7165/downcomer.png

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


thanks !

Ralen May 2, 2012 03:54

2 Attachment(s)
Something like this. Сan you attach a geometry file?

DungPham May 2, 2012 05:33

Quote:

Originally Posted by Ralen (Post 358764)
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:o

Ralen May 2, 2012 05:53

Quote:

Originally Posted by DungPham (Post 358797)
this project is confidential:o

Ok! :) But I don't understand the geometry of the tube. The tube have 3 independent flows, separated by a thin walls?

Far May 2, 2012 06:36

create another o-grid around the pipe to better control the quality.

DungPham May 2, 2012 06:42

Quote:

Originally Posted by Ralen (Post 358803)
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:)

DungPham May 2, 2012 07:00

Quote:

Originally Posted by Far (Post 358826)
create another o-grid around the pipe to better control the quality.

You mean o-grid 4 blocks outside of pipe?

Ralen May 2, 2012 07:03

1 Attachment(s)
Quote:

Originally Posted by DungPham (Post 358828)
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.

Ralen May 2, 2012 07:38

3 Attachment(s)
Quote:

Originally Posted by Far (Post 358826)
create another o-grid around the pipe to better control the quality.

Like this?

Far May 2, 2012 12:00

yes, it is. By moving the vertices things will be much better(can be done at latter stages when topology is freezed).

PSYMN May 3, 2012 09:35

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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