Multiple cell zones in FLUENT

bluemonkee · September 8, 2011, 18:55

I am trying to create multiple cell zones so that I can have different porosity in each zone. This is a 2-D asymmetric model, and I generated the mesh using Ansys's Design Modeler and Meshing tools. Right now, I can get several zones, but FLUENT is requiring that the lines between each zone has its own boundary condition (FLUENT has assigned all of these lines names that begin with "surface_"). Is there a way to remove the surfaces from the model in FLUENT? Or is there a better way to use the ANSYS tools to create a multiregion model?

Thanks for your help!

rohit.mukare7 · November 1, 2011, 10:57

hi i am also facing the same problem.plz let me knw if u could solve that..

CFD_rocks · November 3, 2011, 11:38

I am also having the same problem, any one got an idea?!

swetkyz · November 5, 2011, 10:29

If I understand correctly, you are just trying to get all of the zones to behave as one continuous fluid domain. Ideally, you would want to generate a conformal mesh, which you can do by making all of your zones one 'part' in Design Modeler. You can do this by selecting them and right clicking then selecting "form new part".

To connect the fluids at the interfaces, you need to merge the two surfaces at each interface (between fluid zones). To do this go to 'Mesh Interfaces' under 'Problem Setup' in the menu bar on the left. It is fairly straightforward from there.

Hopefully this helps.

-Zachariah

CFD_rocks · November 8, 2011, 07:24

Thanks, it did help a lot!

sumanth_0811 · January 20, 2013, 05:11

Can anyone help me with the creation of multiple zones during meshing?
Is there a tutorial for that?

fn1743 · March 5, 2013, 01:25

how do i draw a 2D block capable of being split into two zones? I need to create a free surface in a tank.

thanks

September 8, 2011, 18:55	Multiple cell zones in FLUENT	#1
bluemonkee New Member Adam Join Date: Jan 2011 Posts: 4 Rep Power: 4	I am trying to create multiple cell zones so that I can have different porosity in each zone. This is a 2-D asymmetric model, and I generated the mesh using Ansys's Design Modeler and Meshing tools. Right now, I can get several zones, but FLUENT is requiring that the lines between each zone has its own boundary condition (FLUENT has assigned all of these lines names that begin with "surface_"). Is there a way to remove the surfaces from the model in FLUENT? Or is there a better way to use the ANSYS tools to create a multiregion model? Thanks for your help!

January 20, 2013, 05:11	How to go about it?	#6
sumanth_0811 New Member Sumanth Dathathri Join Date: Dec 2012 Posts: 5 Rep Power: 2	Can anyone help me with the creation of multiple zones during meshing? Is there a tutorial for that?

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November 1, 2011, 10:57		#2
rohit.mukare7 New Member rohit mukare Join Date: Aug 2011 Location: rourkela Posts: 16 Rep Power: 3	hi i am also facing the same problem.plz let me knw if u could solve that..

November 3, 2011, 11:38		#3
CFD_rocks New Member Oyster Join Date: Nov 2011 Posts: 3 Rep Power: 3	I am also having the same problem, any one got an idea?!

November 5, 2011, 10:29		#4
swetkyz Member Zachariah Swetky Join Date: Aug 2011 Posts: 36 Rep Power: 3	If I understand correctly, you are just trying to get all of the zones to behave as one continuous fluid domain. Ideally, you would want to generate a conformal mesh, which you can do by making all of your zones one 'part' in Design Modeler. You can do this by selecting them and right clicking then selecting "form new part". To connect the fluids at the interfaces, you need to merge the two surfaces at each interface (between fluid zones). To do this go to 'Mesh Interfaces' under 'Problem Setup' in the menu bar on the left. It is fairly straightforward from there. Hopefully this helps. -Zachariah

November 8, 2011, 07:24		#5
CFD_rocks New Member Oyster Join Date: Nov 2011 Posts: 3 Rep Power: 3	Thanks, it did help a lot!

March 5, 2013, 01:25		#7
fn1743 New Member Join Date: Feb 2013 Posts: 3 Rep Power: 2	how do i draw a 2D block capable of being split into two zones? I need to create a free surface in a tank. thanks