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September 21, 2013, 19:35 |
Delete wall between two regions
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#1 |
New Member
Carlo
Join Date: Apr 2013
Posts: 10
Rep Power: 13 |
Hello ICEM crowd,
I need to create a hexa mesh with two different adjacent regions, say FLUID0 and FLUID1. I can do this easily by creating a "Part" for each region. ICEM CFD thinks that these two parts are two different materials. This wouldn't be a problem if only ICEM didn't create a wall in between them. I read on this forum that is possible to setup the hexa mesh (in Global Mesh Parameters.. or something like that) so that it doesn't do this. I'm not sure how to do this. I basically need one mesh with regions of it that have different labels ("FLUID0" and "FLUID1"). I need these labels in my solver in these specific regions to activate certain functionalities. I would appreciate your help on this! Thanks! |
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September 22, 2013, 22:13 |
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#3 |
New Member
Carlo
Join Date: Apr 2013
Posts: 10
Rep Power: 13 |
Hi Diamondx - thanks for your reply. Unfortunately it didn't work. My solver tells me that some faces "are not associated" with the internal wall. Is there something deeper and non-Fluent dependent that I can do? Something in Global Mesh Setup for example? I simply want to leave the labels to the volume with no physical surface dividing them.
Thanks! |
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September 22, 2013, 23:29 |
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#4 | |
Super Moderator
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Quote:
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September 22, 2013, 23:33 |
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#5 |
New Member
Carlo
Join Date: Apr 2013
Posts: 10
Rep Power: 13 |
Hi Far - My mesh is purely HEXA... I think it was you (in some post I read) who said that you can do this at the Global Mesh Setup level.. thanks for your help.
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September 23, 2013, 01:34 |
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#7 |
Super Moderator
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Yes exactly. Still you will see the boundary condition (interface or whatever name you choose) in fluent (as int_interface) but now it interiour. Means it will pass the flow as usual.
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September 23, 2013, 01:37 |
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#8 |
New Member
Carlo
Join Date: Apr 2013
Posts: 10
Rep Power: 13 |
yes.. I create a surface in between the two regions and that surface is added to a "PART" called, say, SHARED_WALL. This (surface) part is a boundary in between the two regions which have different labels (or part names). I would like this boundary to disappear before my mesh gets to the solver. If I define it as an internal face I feel like that would work for Fluent but for an in-house solver I think I need that wall to be removed before (at the connectivity level).
I will retry as you say -- labeling that surface as an "internal_surface" -- and see if I can have my solver accept it if that's the only way I can do such a thing with ICEM. Thanks! |
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September 23, 2013, 14:36 |
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#10 |
Senior Member
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,663
Blog Entries: 1
Rep Power: 47 |
Yes, of course there is an automatic way to turn that off that doesn't require creating any geometry, etc... The fact that ICEM CFD Hexa defaults to project a face between two materials to the nearest surface is meant as a convenience, not to cause trouble. ;^)
If you have two blocking materials, say FLUID1 and FLUID2, and you don't want to have default face to surface projection between blocks of these two materials (usually because you want these in different materials for selection or other "non-physics" reasons);
Let us know if that is what you were looking for... Of course, this just changes the default. If you want to associate a face between these blocks to a surface, you can always do that manually.
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