[Commercial meshers] define porous zone in gambit

Michel_HB · July 7, 2010, 11:50

Hello FOAMers,

I want to simulate flow through and around porous media.
I created a mesh in block-mesh and blockmesh defines the porous zone in the cellZone-file.
Now I want to build the mesh with gamit and then export the mesh to OF.
But how can I define a porous zone with Gambit?
In the attached file you can see the channel with the porous block inside.
Has anyone an idea how to solve the problem?

thanks a lot, have a good day....
Michel

Daniele111 · November 26, 2011, 06:00

Hi I have the same problem! How did you solve it? Thanks Daniele

zaynah04 · September 17, 2012, 06:26

hi Micheal

had you resolved that problem?
Regards
zaynah

-mAx- · September 19, 2012, 02:16

in Gambit you have to isolate the volume which will be treated as porous.
For that, use split tool.
Once you volume is splitted, you can assign it as porous zone in the specify continuum types panel
http://aerojet.engr.ucdavis.edu/gamb...zone_cont_type

myaccount · February 26, 2015, 04:13

Hi MAx,
I want to solve flow through porous medium problem.For this I need to create a porous continuum.I am currently working with GAMBIT 2.4.6,in which I found only fluid and solid continuum.Now how to create a porous continuum in GAMBIT 2.4.6? I have also seen the following link...

http://aerojet.engr.ucdavis.edu/gamb...zone_cont_type

I still could not fix the problem.Please suggest me the correct path.

-mAx- · February 26, 2015, 06:22

Define your porous zone as fluid in Gambit , (but separated as the default domain)
Once your mesh is imported in Fluent, define the fluid zone as porous-jump instead of interior

myaccount · February 26, 2015, 07:01

Hi Max,
Thanks for the reply.I have tried the method you suggested.I still have a problem in the procedure you mentioned.

I have defined the zone of porous medium as fluid in GAMBIT( I named it as "middle", with continuum as fluid in GAMBIT.).
When I transferred this to FLUENT, in boundary conditions panel, in the boundary conditions panel, a default interior 013 is shown (the mesh in that zone) also there is "middle" shown as fluid.
My question is:
Should I change this default interior 013 to "porous jump" or
should I change the zone of "middle" from fluid to porous?
Which is correct?

-mAx- · February 26, 2015, 07:17

According to this tutorial: https://www.sharcnet.ca/Software/Flu...tg/node113.htm
I would say, you have to choose "middle"

myaccount · February 26, 2015, 07:41

Hi MAx,
Thanks a lot for the reply.I will implement this.

September 19, 2012, 02:16		#4
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	in Gambit you have to isolate the volume which will be treated as porous. For that, use split tool. Once you volume is splitted, you can assign it as porous zone in the specify continuum types panel http://aerojet.engr.ucdavis.edu/gamb...zone_cont_type __________________ In memory of my friend Hervé: CFD engineer & freerider

February 26, 2015, 04:13	Porous continuum in GAMBIT	#5
myaccount Member Join Date: Dec 2013 Posts: 53 Rep Power: 12	Hi MAx, I want to solve flow through porous medium problem.For this I need to create a porous continuum.I am currently working with GAMBIT 2.4.6,in which I found only fluid and solid continuum.Now how to create a porous continuum in GAMBIT 2.4.6? I have also seen the following link... http://aerojet.engr.ucdavis.edu/gamb...zone_cont_type I still could not fix the problem.Please suggest me the correct path.

February 26, 2015, 06:22		#6
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	Define your porous zone as fluid in Gambit , (but separated as the default domain) Once your mesh is imported in Fluent, define the fluid zone as porous-jump instead of interior __________________ In memory of my friend Hervé: CFD engineer & freerider

February 26, 2015, 07:01	Porous continuum in GAMBIT	#7
myaccount Member Join Date: Dec 2013 Posts: 53 Rep Power: 12	Hi Max, Thanks for the reply.I have tried the method you suggested.I still have a problem in the procedure you mentioned. I have defined the zone of porous medium as fluid in GAMBIT( I named it as "middle", with continuum as fluid in GAMBIT.). When I transferred this to FLUENT, in boundary conditions panel, in the boundary conditions panel, a default interior 013 is shown (the mesh in that zone) also there is "middle" shown as fluid. My question is: Should I change this default interior 013 to "porous jump" or should I change the zone of "middle" from fluid to porous? Which is correct?

February 26, 2015, 07:17		#8
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	According to this tutorial: https://www.sharcnet.ca/Software/Flu...tg/node113.htm I would say, you have to choose "middle" __________________ In memory of my friend Hervé: CFD engineer & freerider

November 26, 2011, 06:00		#2
Daniele111 Senior Member Daniele Join Date: Feb 2010 Posts: 134 Rep Power: 16	Hi I have the same problem! How did you solve it? Thanks Daniele

September 17, 2012, 06:26		#3
zaynah04 Senior Member zaynah K. Join Date: Jun 2012 Location: Mauritius Posts: 138 Rep Power: 13	hi Micheal had you resolved that problem? Regards zaynah

February 26, 2015, 07:41	Porous continuum in GAMBIT	#9
myaccount Member Join Date: Dec 2013 Posts: 53 Rep Power: 12	Hi MAx, Thanks a lot for the reply.I will implement this.

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