intiror faces

ezabille · December 6, 2010, 11:13

hi

i have a problem

, when i export 3d volumes to fluent some of interior faces fluent define them as walls not interior

and they must be a coupled wall or interior to study heat transfear throw them

i try to define these faces from gambit as interior but i found a problem when i export to fluent

so how can i change walls in to interior or coupled walls?

can any one tell me?

-mAx- · December 7, 2010, 01:37

First I have no experience with solid conduction in Fluent.
But if you use interior or internal BC, Fluent understands your flow will pass trough this section. If the surface on which you applied this interior BC is closing a volume, I assume gambit will export it as wall (else your volume isn't closed)
In you case you need to define your surface as wall and then in Fluent you set your coupled wall in the Thermal section from Wall.
Check online Help Chapter 7.13.1 "Input at Wall Boundaries"

jpo · December 7, 2010, 22:57

Make sure in gambit your interior face doesn't have a duplicate somehow. It shouldn't be a problem for fluent to recognize it as an interior

To get a good interior face : in gambit, split a volume with a face, keep the split volumes connected. Erase the splitting face. Mark the dividing face as 'interior'
Fluent will recognize it as such

December 6, 2010, 11:13	intiror faces	#1
ezabille New Member lyly Join Date: Nov 2010 Posts: 24 Rep Power: 15	hi i have a problem , when i export 3d volumes to fluent some of interior faces fluent define them as walls not interior and they must be a coupled wall or interior to study heat transfear throw them i try to define these faces from gambit as interior but i found a problem when i export to fluent so how can i change walls in to interior or coupled walls? can any one tell me?

December 7, 2010, 01:37		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	First I have no experience with solid conduction in Fluent. But if you use interior or internal BC, Fluent understands your flow will pass trough this section. If the surface on which you applied this interior BC is closing a volume, I assume gambit will export it as wall (else your volume isn't closed) In you case you need to define your surface as wall and then in Fluent you set your coupled wall in the Thermal section from Wall. Check online Help Chapter 7.13.1 "Input at Wall Boundaries" __________________ In memory of my friend Hervé: CFD engineer & freerider

December 7, 2010, 22:57		#3
jpo Member Join Date: Apr 2009 Posts: 94 Rep Power: 17	Make sure in gambit your interior face doesn't have a duplicate somehow. It shouldn't be a problem for fluent to recognize it as an interior To get a good interior face : in gambit, split a volume with a face, keep the split volumes connected. Erase the splitting face. Mark the dividing face as 'interior' Fluent will recognize it as such