boundary condition between porous and fluid zones

Mansureh · September 4, 2010, 04:00

hi every body
I'm trying to model a porous media inside a cylinder, this cylinder is in contact with an annulus which is a fluid zone. what should be the proper boundary condition between this two zones.

thanks for any help

xrs333 · September 4, 2010, 09:48

Hi, Mansureh,
Using boundary condition type interior or interface for the interface between the two zones is OK.

Mansureh · September 5, 2010, 02:27

hi xrs333
thanks very much for your help. and could you tell me what the difference between interior and interfaceboundary conditions is? and can I use porous jump BC instead?

kind regards

cactilio86 · September 13, 2010, 08:42

Not really familiar with your case, but:

1. Interior is composed of only one surface. hence, its mesh is that of the surface itself.

2. Interface is composed of two surfaces - one IN and one OUT. The nice thing is that therefore the same physical surface contains two "model" surfaces and they can have different meshes. Interpolation between IN & OUT is used for the solution at that surface.

The interface is extremely useful to make your meshing problem easier. For instance, while coopering in a certain direction you might stumble upon another coopered mesh coming in the opossite direction of your model: and then you have the problem of making them compatible.

regards

Mansureh · September 14, 2010, 07:16

Hi cactilio86

thanks for your help.

javadshahbazi · June 5, 2011, 09:31

Quote:

Originally Posted by cactilio86

Not really familiar with your case, but:

1. Interior is composed of only one surface. hence, its mesh is that of the surface itself.

2. Interface is composed of two surfaces - one IN and one OUT. The nice thing is that therefore the same physical surface contains two "model" surfaces and they can have different meshes. Interpolation between IN & OUT is used for the solution at that surface.

The interface is extremely useful to make your meshing problem easier. For instance, while coopering in a certain direction you might stumble upon another coopered mesh coming in the opossite direction of your model: and then you have the problem of making them compatible.

regards

how can we get more information on this type of boundary conditions?

September 4, 2010, 04:00	boundary condition between porous and fluid zones	#1
Mansureh New Member Join Date: Jul 2010 Posts: 22 Rep Power: 15	hi every body I'm trying to model a porous media inside a cylinder, this cylinder is in contact with an annulus which is a fluid zone. what should be the proper boundary condition between this two zones. thanks for any help

September 13, 2010, 08:42		#4
cactilio86 New Member Join Date: Mar 2009 Posts: 11 Rep Power: 17	Not really familiar with your case, but: 1. Interior is composed of only one surface. hence, its mesh is that of the surface itself. 2. Interface is composed of two surfaces - one IN and one OUT. The nice thing is that therefore the same physical surface contains two "model" surfaces and they can have different meshes. Interpolation between IN & OUT is used for the solution at that surface. The interface is extremely useful to make your meshing problem easier. For instance, while coopering in a certain direction you might stumble upon another coopered mesh coming in the opossite direction of your model: and then you have the problem of making them compatible. regards javadshahbazi likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Radiation at interface between fluid and porous domain	Hitch8	CFX	19	April 20, 2015 06:24
Porous media Interfacial boundary condition	Amadou Sowe	FLUENT	0	March 14, 2006 15:55
Help:What's wrong with my porous zones setting!!?	jjw	FLUENT	2	August 26, 2005 05:16
Multicomponent fluid	Andrea	CFX	2	October 11, 2004 05:12
porous plain media interfacial boundary condition.	rockida	FLUENT	0	June 10, 2004 06:33

September 4, 2010, 09:48		#2
xrs333 Senior Member xrs333 Join Date: Aug 2010 Posts: 125 Rep Power: 16	Hi, Mansureh, Using boundary condition type interior or interface for the interface between the two zones is OK.

September 5, 2010, 02:27		#3
Mansureh New Member Join Date: Jul 2010 Posts: 22 Rep Power: 15	hi xrs333 thanks very much for your help. and could you tell me what the difference between interior and interfaceboundary conditions is? and can I use porous jump BC instead? kind regards

September 14, 2010, 07:16		#5
Mansureh New Member Join Date: Jul 2010 Posts: 22 Rep Power: 15	Hi cactilio86 thanks for your help.