what is the function of cell zone conditions in fluent ?

jiechelsea · May 16, 2018, 01:29

which part of the model will be defined by cell zone conditions?

What is the difference between the cell zone condition and interior surface body in boundary conditions ?

Thanks !

LuckyTran · May 16, 2018, 09:10

Cell zone conditions is where you set options related to the volume/zones. For simpler models you probably never have to touch these. But if you have multiple volumes with different materials and slightly different models in each (i.e. solid regions and fluid regions) then this is where you would set them.

The interior surface is the collection of interior cell faces. You probably also never have to touch this because usually you have BC's only at domain boundaries and not on the cell faces inside your domain.

jiechelsea · May 16, 2018, 20:18

many thanks! LuckyTran

jiechelsea · May 16, 2018, 21:37

Quote:

Originally Posted by LuckyTran

Cell zone conditions is where you set options related to the volume/zones. For simpler models you probably never have to touch these. But if you have multiple volumes with different materials and slightly different models in each (i.e. solid regions and fluid regions) then this is where you would set them.

The interior surface is the collection of interior cell faces. You probably also never have to touch this because usually you only BC's only at domain boundaries not on the cell faces inside your domain.

One more question. LuckyTran

When I use VOF, like water and air.
In the cell zone condition panel, I can select mixture, water, air for the Phase.
What is the difference ?

Again Thanks

LuckyTran · May 17, 2018, 00:37

If you have water and air in this zone then you pick mixture.

This is again a multiple zone option. Sometimes you have another region/zone where there is only air or only water and you don't want to solve vof in this zone because it would be a waste.

May 16, 2018, 01:29	what is the function of cell zone conditions in fluent ?	#1
jiechelsea New Member jie Join Date: May 2018 Posts: 3 Rep Power: 8	which part of the model will be defined by cell zone conditions? What is the difference between the cell zone condition and interior surface body in boundary conditions ? Thanks !

May 16, 2018, 09:10		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,676 Rep Power: 66	Cell zone conditions is where you set options related to the volume/zones. For simpler models you probably never have to touch these. But if you have multiple volumes with different materials and slightly different models in each (i.e. solid regions and fluid regions) then this is where you would set them. The interior surface is the collection of interior cell faces. You probably also never have to touch this because usually you have BC's only at domain boundaries and not on the cell faces inside your domain. Last edited by LuckyTran; May 22, 2018 at 15:40.

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May 16, 2018, 20:18		#3
jiechelsea New Member jie Join Date: May 2018 Posts: 3 Rep Power: 8	many thanks! LuckyTran

May 17, 2018, 00:37		#5
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,676 Rep Power: 66	If you have water and air in this zone then you pick mixture. This is again a multiple zone option. Sometimes you have another region/zone where there is only air or only water and you don't want to solve vof in this zone because it would be a waste.