boundary conditions

primateiro · December 5, 2010, 21:26

hello!

I'd like to know, how to build internal boundaries (fan, radiator, porous jump, wall, and interior) in a 3D model.

thanks

perdita · December 6, 2010, 05:02

you should do this when building your mesh. there should be the option to define boundary zones somewhere.

otherwise in fluent, you should go to define ->boundary conditions, and then click on the physical features and assign them the relevant boundary conditions.

jpo · December 6, 2010, 06:58

if in gambit you cut 2 volumes with a face but keep the 2 volumes "connected", you will have a single face on the border between the 2 volumes.

It can be defined as "interior". This means no boundary conditions are applied to it, it is NOT treated as a boundary, but as part of the volume

sinoalps · December 6, 2010, 08:08

if in gambit ,you can set it in the right panel ,the third icon at the top

primateiro · December 26, 2010, 18:40

hi perdita
look, i've tried to build internal boundaries from my model mesh but i can't find the right command tool (in gambit) to make this work out.

please i need a help about this, if someone has any idea...

thanks

vishnukmd7 · December 27, 2010, 04:38

I don't know if this is what you are looking for but in the workbench meshing app , you can create named selections while meshing and apply these boundary conditions once the model has been imported to fluent

primateiro · January 10, 2011, 10:40

hi vishnukmd7

Look, i've tried to follow your indications but i can't solve the problem. Please i'd like to you give me some more info.

Now i'll give some more info about the problem that i have to solve:

- I've built a box, inside this box i have to consider one or more faces this faces will become differents ventilators (like inlet vent, fan, radiator...). The real problem is to make that face(s) become part of the box (the only volume mesh considered for fluent).

Thanks a lot for all the sugestions

December 5, 2010, 21:26	boundary conditions	#1
primateiro New Member Join Date: Oct 2010 Posts: 4 Rep Power: 15	hello! I'd like to know, how to build internal boundaries (fan, radiator, porous jump, wall, and interior) in a 3D model. thanks

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December 6, 2010, 05:02		#2
perdita New Member lw Join Date: Nov 2010 Posts: 8 Rep Power: 15	you should do this when building your mesh. there should be the option to define boundary zones somewhere. otherwise in fluent, you should go to define ->boundary conditions, and then click on the physical features and assign them the relevant boundary conditions.

December 6, 2010, 06:58		#3
jpo Member Join Date: Apr 2009 Posts: 94 Rep Power: 17	if in gambit you cut 2 volumes with a face but keep the 2 volumes "connected", you will have a single face on the border between the 2 volumes. It can be defined as "interior". This means no boundary conditions are applied to it, it is NOT treated as a boundary, but as part of the volume

December 6, 2010, 08:08		#4
sinoalps New Member Shen Join Date: Jul 2010 Posts: 1 Rep Power: 0	if in gambit ,you can set it in the right panel ,the third icon at the top

December 26, 2010, 18:40		#5
primateiro New Member Join Date: Oct 2010 Posts: 4 Rep Power: 15	hi perdita look, i've tried to build internal boundaries from my model mesh but i can't find the right command tool (in gambit) to make this work out. please i need a help about this, if someone has any idea... thanks

December 27, 2010, 04:38		#6
vishnukmd7 New Member Vishnu Prasad Join Date: Sep 2010 Location: Goa Posts: 19 Rep Power: 15	I don't know if this is what you are looking for but in the workbench meshing app , you can create named selections while meshing and apply these boundary conditions once the model has been imported to fluent

January 10, 2011, 10:40		#7
primateiro New Member Join Date: Oct 2010 Posts: 4 Rep Power: 15	hi vishnukmd7 Look, i've tried to follow your indications but i can't solve the problem. Please i'd like to you give me some more info. Now i'll give some more info about the problem that i have to solve: - I've built a box, inside this box i have to consider one or more faces this faces will become differents ventilators (like inlet vent, fan, radiator...). The real problem is to make that face(s) become part of the box (the only volume mesh considered for fluent). Thanks a lot for all the sugestions