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[ANSYS Meshing] ERROR: ...No Domains have been defined

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Old   January 30, 2012, 22:43
Default ERROR: ...No Domains have been defined
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Hi Guys,

I am new to Ansys and have probably a very basic question.

I am attempting to run a 2D CFX simulation through workbench. I Have created the geometry and used ansys meshing to do a quick mesh. Now when I try open up CFX-Pre I get an error message "ERROR: In analysis 'Flow Analysis 1': No domains have been defined." and the mesh will not open.

I am confused because I know how to define a domain in CFX pre when the mesh imports however without it importing how am I meant to define domains?

Any help is greatly appreciated.

Thanks
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Old   February 26, 2015, 02:57
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you shoud make 3D mesh in ansys CFX
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Old   December 18, 2015, 20:04
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Hi, although I have used the 3D mesh, I have the same problem as above. "ERROR: In analysis 'Flow Analysis 1': No domains have been defined." and the mesh will not open."
Any help will be appreciated!

Quote:
Originally Posted by svanmunster View Post
Hi Guys,

I am new to Ansys and have probably a very basic question.

I am attempting to run a 2D CFX simulation through workbench. I Have created the geometry and used ansys meshing to do a quick mesh. Now when I try open up CFX-Pre I get an error message "ERROR: In analysis 'Flow Analysis 1': No domains have been defined." and the mesh will not open.

I am confused because I know how to define a domain in CFX pre when the mesh imports however without it importing how am I meant to define domains?

Any help is greatly appreciated.

Thanks
Hi
Is your problem already solved? I have the same problem as you, although I used the 3D mesh.
Thanks in advance

Last edited by wyldckat; December 19, 2015 at 13:48. Reason: posted 2 posts a few minutes apart from each other by accident
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Old   December 20, 2015, 18:06
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define each part of your geometry in your CFX
Create domains for each part and give thr initial condition.
Also create any interface if needed
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Old   December 21, 2015, 13:40
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Quote:
Originally Posted by Kapi View Post
define each part of your geometry in your CFX
Create domains for each part and give thr initial condition.
Also create any interface if needed
Hi Kapi
Thanks a lot for your kindly respond. I have already made my geometry by DesignModeler. I could not really understand your point. Do you want me to make my geometry by CFX itself? If yes so, how can I do so?
Do you know any CFX manual to explain how to make geometry and mesh and how to proceed the model and get the results? Thanks in advance
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Old   December 22, 2015, 08:23
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I think Kapi meant, that you should name properly all your domains and parts in CFX-Pre so that there's no part left with the name "default".
For each domain, e.g. inlet tube, you can specify initial parameters such as velocity.
The definition of interfaces in Pre should also be complete and proper.
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Old   December 22, 2015, 14:42
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Quote:
Originally Posted by -Maxim- View Post
I think Kapi meant, that you should name properly all your domains and parts in CFX-Pre so that there's no part left with the name "default".
For each domain, e.g. inlet tube, you can specify initial parameters such as velocity.
The definition of interfaces in Pre should also be complete and proper.
Thanks Maxim for your kindly respond. The problem I have now is that when I try to open up CFX-Pre I get an error message "ERROR: In analysis 'Flow Analysis 1': No domains have been defined." and the mesh will not open. Therefore how can I define domain in CFX pre when my mesh do not even open in CFX pre? Thanks again
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Old   December 22, 2015, 17:52
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may i suggest you to save your mesh file (*.msh) in your local drive.
Open CFX and import the mesh file in CFX, let me know if it works.

Which version of CFX are you using?

Cheers
KAPI
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Old   December 22, 2015, 19:36
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Dear Kapi
Thanks a lot for your kindly help. Yes, it works.
Also the following thread Error msg: In Analysis 'Flow Analysis 1': No domains have been defined. had the same problem.

I am using the version of 14.5.

Thanks again

Rasoul
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Old   December 22, 2015, 20:24
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Good it works now!!

have an awesome holidays!
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Old   January 2, 2016, 02:06
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Hello,
I am applying the boundary conditions on CFX, so how can I write a CEL expression for having a non-linear heat flux (as a wall boundary condition) depending on both time and temperature? Is there any example to show how to do so? Thanks in advance and Happy new year
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