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

need help to solve "error"

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 18, 2013, 14:39
Default need help to solve "error"
  #1
Senior Member
 
Moha
Join Date: Mar 2013
Location: EU
Posts: 103
Rep Power: 0
ahvz is on a distinguished road
how to solve this error?

WARNING: Unassigned interface zone detected for interface 10
Unassigned interface zones found. Flow is not initialized.
Interrupting...
Done.
ahvz is offline   Reply With Quote

Old   March 18, 2013, 20:47
Default
  #2
Senior Member
 
Join Date: Aug 2011
Posts: 421
Blog Entries: 1
Rep Power: 22
blackmask will become famous soon enough
define / mesh-interface / create or equivalent operations in GUI
blackmask is offline   Reply With Quote

Old   March 18, 2013, 21:22
Default
  #3
Senior Member
 
Moha
Join Date: Mar 2013
Location: EU
Posts: 103
Rep Power: 0
ahvz is on a distinguished road
thank you for reply,

I did, but there is a problem, because, I defined bound between solid and air and its only one bound while the error happens regarding to "create edit mesh interface" zone 1 and zone 2 but I have only one zone defined. how to create another zone?
where is my mistake?

Error: Zone boundairsolid1 selected in both left and right interface lists
Error Object: #f

Interrupting...
Done.


regards
ahvz is offline   Reply With Quote

Old   March 19, 2013, 02:23
Default
  #4
Senior Member
 
Join Date: Aug 2011
Posts: 421
Blog Entries: 1
Rep Power: 22
blackmask will become famous soon enough
If this is the surface separating fluid and solid, then you should change its type to wall.
blackmask is offline   Reply With Quote

Old   March 19, 2013, 05:36
Default
  #5
Senior Member
 
Moha
Join Date: Mar 2013
Location: EU
Posts: 103
Rep Power: 0
ahvz is on a distinguished road
Indeed, this are connected from one side. So, I should define interface instead of wall am I right?
when we should really use interface?

regards,
ahvz is offline   Reply With Quote

Old   March 19, 2013, 07:18
Default
  #6
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23
vasava will become famous soon enough
Yes, you need to define interface between two zones. You can do it in Define>Mesh Interfaces.
vasava is offline   Reply With Quote

Old   March 19, 2013, 07:32
Default
  #7
Senior Member
 
Moha
Join Date: Mar 2013
Location: EU
Posts: 103
Rep Power: 0
ahvz is on a distinguished road
but my problem is how is it possible to have two zone ? when I open mesh interface there is appear only one zone which its bound between two zones..
can't understand my mistake
ahvz is offline   Reply With Quote

Old   March 19, 2013, 09:16
Default
  #8
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23
vasava will become famous soon enough
can you post picture of your mesh and model?
vasava is offline   Reply With Quote

Old   March 19, 2013, 09:52
Default
  #9
Senior Member
 
OJ
Join Date: Apr 2012
Location: United Kindom
Posts: 473
Rep Power: 20
oj.bulmer will become famous soon enough
Which software did you use to create mesh? Whatever it is, did you create any boundary condition with a name that has word "interface" in it? If yes, FLUENT gets confused and considers it as interface, though it is not intended to be.
oj.bulmer is offline   Reply With Quote

Old   March 19, 2013, 10:06
Default
  #10
Senior Member
 
Moha
Join Date: Mar 2013
Location: EU
Posts: 103
Rep Power: 0
ahvz is on a distinguished road
I didn't name with "interface" at all in mesh file. (ICEM)

I attached my 2D model. let hear your opinions...
regards,
Attached Images
File Type: jpg Capture.JPG (40.5 KB, 63 views)
File Type: jpg mesh.JPG (53.4 KB, 57 views)
ahvz is offline   Reply With Quote

Old   March 20, 2013, 03:23
Default
  #11
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23
vasava will become famous soon enough
The answer lie within your own comment. In order to have an interface you must have two domains. When you create two domains in contact with each other, the meshing software either ICEM or Ansys-Meshing should automatically generate the interface.

Tip: In ICEM or Ansys-Meshing you can right click the 'Mesh Connections' option and select 'Create Automatic Connections' to generate interface.

Next, When you import your mesh in Fluent you will see that the 'Mesh Interface' option is automatically activated. You need not do anything unless you observe that your flow is not behaving properly.
vasava is offline   Reply With Quote

Old   March 20, 2013, 11:05
Default
  #12
Senior Member
 
Moha
Join Date: Mar 2013
Location: EU
Posts: 103
Rep Power: 0
ahvz is on a distinguished road
Thank you for your answer,

I did. but now, when I open mesh into the FLUENT the below warning appear at the begin: what can I do to solve the problem?

Warning: Flow boundary zone 8 is adjacent to a solid
zone (4). This problem MUST be fixed before
solution can proceed!
ahvz is offline   Reply With Quote

Old   March 21, 2013, 03:26
Default
  #13
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23
vasava will become famous soon enough
Comment Deleted

Last edited by vasava; March 21, 2013 at 10:49.
vasava is offline   Reply With Quote

Old   March 21, 2013, 08:58
Default
  #14
Senior Member
 
Moha
Join Date: Mar 2013
Location: EU
Posts: 103
Rep Power: 0
ahvz is on a distinguished road
thank you for your answer all,

but already its correct and I have this error even defined fluid and solid in "cell zone condition". still have a warning...

I followed like this suggestion by m2montazari
http://www.cfd-online.com/Forums/flu...snt-occur.html
ahvz is offline   Reply With Quote

Old   March 21, 2013, 10:48
Default
  #15
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23
vasava will become famous soon enough
My previous answer was wrong. Sorry about that. I forgot that you have air and solid. Here is the correct answer.

When you want to simulate conjugate heat transfer you must activate ‘coupling ’ in the ‘define interface’ section. By default this option is not activated. So you must delete the current interface first and then create a new interface and select coupled.
vasava is offline   Reply With Quote

Old   March 21, 2013, 10:53
Default
  #16
Senior Member
 
Moha
Join Date: Mar 2013
Location: EU
Posts: 103
Rep Power: 0
ahvz is on a distinguished road
thank you Vasava,

now its okay. without "warning".

another question may not belong to this part, however, its my problem.

how to input a Time-Temperature file regarding to do transient analysis ?

Is there any procedure?

I already done into ANSYS apdl but in FLUENT I dont know how...

regards,
ahvz is offline   Reply With Quote

Old   March 21, 2013, 12:37
Default
  #17
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23
vasava will become famous soon enough
Do you mean time dependent temperature profile as boundary condition?
vasava is offline   Reply With Quote

Old   March 21, 2013, 12:39
Default
  #18
Senior Member
 
Moha
Join Date: Mar 2013
Location: EU
Posts: 103
Rep Power: 0
ahvz is on a distinguished road
exactly!,

I have time- temperature profile which should be imposed to the model.. now I cant find the import such a file in FLUENT ...

thank you for your attention ,
ahvz is offline   Reply With Quote

Old   March 21, 2013, 15:32
Default
  #19
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 23
vasava will become famous soon enough
I think you can make UDF with DEFINE_PROFILE macro.
vasava 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
Use advection step and Dispersion step to solve advection diffusion equation cooljd Main CFD Forum 0 October 15, 2012 16:44
Solve Flow or VOF simultaneously ? Ramsey FLUENT 1 February 16, 2011 14:16
Linearized NS euqations: how to solve them?(problem with Matrix operations..) matteoL OpenFOAM Running, Solving & CFD 0 November 18, 2009 07:58
Solve for two or more "Temperatures" Rui CFX 12 September 9, 2008 22:58
How to solve another continuum and momentum eqn? west_wing FLUENT 0 August 25, 2003 11:00


All times are GMT -4. The time now is 17:06.