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-   -   zone types (http://www.cfd-online.com/Forums/fluent/45306-zone-types.html)

Naghman Khan July 9, 2007 11:06

zone types
 
Hello,

I am not understanding this error message I keep getting whilst trying to import a mesh from gambit into Fluent 6 3D:

Warning: Inappropriate zone type (Interior) for one sided z face zone 4 changing to wall

It goes on to say...Cannot change sideIn to Interior because there is only one adjacent cell thread.

I was trying to keep 20 faces on my geometry as Interior zone types (although I'm still not completely sure what Interior means, my supervisor suggested it).

Can anyone help please? Thanks


santosh July 10, 2007 05:00

Re: zone types
 
well interior means the face edges are not considered as wall for the fluid motion during the simulation.. so while importing the gambit model make sure what all faces are in the fluid domain and assign them as interior.. hope this helps


Naghman Khan July 10, 2007 10:38

Re: zone types
 
Santosh,

I have done as you said, i.e. assigned my faces as Fluid in the continuum types and as Interior but I keep getting the error message,

Continuum or boundary condition specified on entity face *** is invalid for Fluent 6

and

Continuum entity *** does not contain any valid entity and is not written

*** refers to my own designations for faces etc

What have I done wrong please?

santosh July 10, 2007 12:28

Re: zone types
 
are u simulating it in 2D plane or 3D... if in 2d then u must consider the face but if 3D then see the apporiprate biundary conditions for the edge of the face... i may be wrong but i think u have the prob there,,, bye


Nak July 10, 2007 18:03

Re: zone types
 
You need to have fluid domains on both sides of the face to specify it as "interior" in Fluent. You cannot specify your faces as fluid in continuum types, like you said you did. Once you specify a face as interior, fluent "ignores" its presence...go through the Fluent manual for more details.

doggy July 24, 2007 04:02

Re: zone types
 
I have the same question.Hope we can solve.


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