CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

Interface wall problem between outer tube face and external flow domain

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 21, 2016, 08:31
Default Interface wall problem between outer tube face and external flow domain
  #1
Member
 
Onur
Join Date: Sep 2015
Posts: 42
Rep Power: 11
Onurozcan is on a distinguished road
Hi all,

I have faced a problem that is relevant to Interface. Two faces are available to fuse one.But I couldnt do it.

with TUI commond, tried some command like fuse-face-zones and merge-zones but they couldnt have been created,

When I have tried both in TUI command and some messages occured in window like below

'fuse face zones'' : due to connectivitiy problem
''merge zones '':unable to merge

in Mesh interfaces window in Fluent, Wall_thickness_1 and wall_thickness_2 have been interfaced ''coupled'' but some problem have been occured like '' could not correct face handedness''

The system you see are combined 2 bodies in a part and shared topo have been applied in ''İmprints''
Attached Images
File Type: png 1.png (44.8 KB, 14 views)
File Type: jpg 2.jpg (179.0 KB, 10 views)
File Type: jpg 3.jpg (116.3 KB, 8 views)
Onurozcan is offline   Reply With Quote

Old   February 23, 2016, 09:33
Default
  #2
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23
vasava will become famous soon enough
The face handedness error indicates that there is a problem with your mesh [Read this]. You can correct this by TUI commands.

The faces or zones will not fuse if the meshes are different on the surface shared by both the domains.

Last edited by vasava; February 23, 2016 at 09:35. Reason: Error
vasava is offline   Reply With Quote

Old   February 24, 2016, 07:43
Default
  #3
Member
 
Onur
Join Date: Sep 2015
Posts: 42
Rep Power: 11
Onurozcan is on a distinguished road
Quote:
Originally Posted by vasava View Post
The face handedness error indicates that there is a problem with your mesh [Read this]. You can correct this by TUI commands.

The faces or zones will not fuse if the meshes are different on the surface shared by both the domains.
Hi vasava,

Thank you for all your help,

The thing you have referred to have been changed meshes by TUI command.I am not saying good(İf I were a helpless I would try it).But there is a point you have defined is,yes, meshes on both surface are different.How can I resolve it?

Maybe ,um, both surface must be made in Mapped face meshes and equally number edge sizing ? (etc 80,100) is that is solution?

Because when I have seen both surfaces in mesh,they have tetra-mesh.That's why they are not touched,combined or matching in that surfaces.Maybe is that my problem? maybe face-handedness have occured in that.What else explaniton are proper to create overlap or gap between meshes.

Kind Regards,
Onurozcan is offline   Reply With Quote

Old   February 24, 2016, 07:56
Default
  #4
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23
vasava will become famous soon enough
You can make maching mesh by using 'Match Control'.

I have difficulty in understanding what you want to say. However I will suggest based on what I make of your problem.

If you want to simulate a solid pipe between the two fluids, you need not have matching meshes. But if you want to fuse two domain then you need matching meshes.
vasava is offline   Reply With Quote

Old   February 24, 2016, 08:07
Default
  #5
Member
 
Onur
Join Date: Sep 2015
Posts: 42
Rep Power: 11
Onurozcan is on a distinguished road
Quote:
Originally Posted by vasava View Post
You can make maching mesh by using 'Match Control'.

I have difficulty in understanding what you want to say. However I will suggest based on what I make of your problem.

If you want to simulate a solid pipe between the two fluids, you need not have matching meshes. But if you want to fuse two domain then you need matching meshes.
Hi vasava,

I have gotten a error(could not face handedness face... for ... as soon as I have done hybrid initialization) in Fluent when I have tried both surface in coupled in Mesh Interfaces.

Aim is to have a just only wall.Otherwise 2 quantity walls have been seen in CFD-Post.(convective heat transfer is not enough )

I hope i have expressed it you.Now is it necessary to do ''Match Mesh''
Onurozcan is offline   Reply With Quote

Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Divergence in AMG solver! marina FLUENT 20 August 1, 2020 12:30
PEM fuel cell simulation pchoopanya Mesh Generation & Pre-Processing 1 March 1, 2016 00:56
[Commercial meshers] GAMBIT to OpenFOAM: "new patch wall is not an external face of the mesh" siavash7684 OpenFOAM Meshing & Mesh Conversion 1 June 28, 2015 17:34
[blockMesh] External flow around cube with blockMesh Woody8 OpenFOAM Meshing & Mesh Conversion 0 March 31, 2015 15:54
2D Problem of External flow over an obstruction sandy_1982 CFX 27 February 3, 2013 06:07


All times are GMT -4. The time now is 18:45.