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February 17, 2013, 09:58 |
Interface zone
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#1 |
Member
Rohit kumar Mittal
Join Date: Sep 2012
Posts: 41
Rep Power: 13 |
While selecting a face, which is common to both air and water, as interface type, it shows message as ""undefined interface zone". Can anyone tell me why it is happening although i had already given this face selection as named selection in meshing.
Its an urgent |
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February 19, 2013, 07:34 |
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#2 |
New Member
Akash
Join Date: Jan 2013
Location: India
Posts: 20
Rep Power: 13 |
Do not mention the boundary as 'interface' in your meshing software. Just create two different zones and export the mesh. FLUENT will automatically identify the physical boundary between the two fluids.
Note that in FLUENT, interface refers to interface between two meshes(grids) and not the physical interface between two fluids. |
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February 19, 2013, 10:22 |
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#3 | |
Senior Member
Khalid Baker
Join Date: Mar 2009
Location: IRAQ
Posts: 168
Rep Power: 17 |
Akash I agreed with what u mentioned about meaning of interface but I not think there is need to create two regions in Gambit because VOF model will create the phase automatically? right? hope to discuss this point with you?
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February 19, 2013, 11:07 |
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#4 |
New Member
Akash
Join Date: Jan 2013
Location: India
Posts: 20
Rep Power: 13 |
kBaker,
No, I don't think VOF model of Fluent will identify the phases automatically. After initializing the solution you will have to patch the zones for the corresponding phase volume fraction. Hence to that you will have to create two zones in Gambit, which will be identified in Fluent and it'll allow you to patch. |
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February 20, 2013, 00:50 |
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#5 |
Senior Member
Khalid Baker
Join Date: Mar 2009
Location: IRAQ
Posts: 168
Rep Power: 17 |
You mean Two regions in Gambit by using physical boundary condition? I think also with this setting single inlet boundary used not two separate inlets for the phases? i.e. No need to draw single inlet for each phase?
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February 22, 2013, 05:20 |
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#6 |
New Member
Akash
Join Date: Jan 2013
Location: India
Posts: 20
Rep Power: 13 |
Sorry, I didn't have any inlet in my problem. So I do not know about setting inlet conditions.
But yes. In Gambit--> Boundary conditions-->Zones--> create two zones. And after initializing the solver in Fluent, patch the two zones for volume fraction (if you are using VOF model). |
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