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unassigned interface zone warning in FLUENT

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Old   December 11, 2017, 05:29
Default interface in the heat exchanger (Fluent)
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Hi mAx,
Thanks for your reply and sorry to disturb you. I tried to define the interface and I did it, but its not working. I couldn't understand the problem where it is.
the Error message is:
p, li { white-space: pre-wrap; }

Note: Slitting sliding interface zone 16 into a coupled wall with shadow zone 19.


creating interface1-wall1-1-1-shadow
Domain Extents:
x-coordinate: min (m) = -5.968863e-18, max (m) = 6.000000e-01
y-coordinate: min (m) = -7.000000e-02, max (m) = 7.000000e-02
z-coordinate: min (m) = -7.000000e-02, max (m) = 7.000000e-02
Volume statistics:
minimum volume (m3): 5.591838e-12
maximum volume (m3): 2.302807e-08
total volume (m3): 9.233134e-03
Face area statistics:
minimum face area (m2): 5.946183e-08
maximum face area (m2): 1.790741e-05
Checking mesh...............
Error: interface zone 6 has two adjacent cell zones.


Error: interface zone 7 has two adjacent cell zones.
..........
Done.


WARNING: Mesh check failed.


To get more detailed information about the mesh check failure
increase the mesh check verbosity via the TUI command
/mesh/check-verbosity.


If possible, I kindly request you to check my case which is available in the following link. (the case just 25 MB, Please check it)
https://www.sendspace.com/filegroup/...umFd5paduM5xow

Thanks,
Sivakumar
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Old   December 11, 2017, 05:45
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Maxime Perelli
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Send me the dbs file from Gambit.
Delete your mesh for having small file.
I will check at your topology with BC
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Old   December 11, 2017, 06:03
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Hi mAx,
Thanks, I have attached the files. Please have a look


Thanks,
Sivakumar
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Old   December 11, 2017, 06:59
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Alright,
In your case, you are trying to "connect" 2 fluid domains HotFluid and ColdFluid by the use of interfaces.
BUT it cannot work since between those 2 Fluids you have a third one FinZone.
In other words, HotFluid and ColdFluid are never in contact together, so you cannot assign interfaces, because those interfaces aren't touching together.
That's why Fluent gives your error
Blue and green Fluid Domains aren't connected (see picture)
Sans titre.png
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Old   December 11, 2017, 07:11
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Hi mAx,
Thanks for your reply, so how can I fix the issue.
Do I need to consider the fins as a face instead volume?
suggest me the correct approach.

Thanks,
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Old   December 11, 2017, 07:24
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I don't think the interface is a good approach, since both fluids will be mixed at the interfaces.
Interfaces for Gambit is only a way to connect 2 Meshes which are not connected (typically rotor/stator)

I assume you only want to let heattransfer from one volume to the other.
Then you should work with heat conduction:
https://www.sharcnet.ca/Software/Flu...e567.htm#86350

Then you should open a new thread in Fluent subforum, because this one is for "interface"
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Old   December 11, 2017, 07:28
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Hi mAx,
Thank you very much for your help.
I just followed the youtube tutorial, exactly similar to mine...

Anyhow, I will checkout the link given by you.

Thanks,
Sivakumar
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