Two Fluids air and mixture

guihds · April 1, 2014, 08:36

Hello,

I'm trying to simulate a object with two entries, the first one only air and the second one mixture (CH4 and H2S). How can I do this?

I wanna set a velocity inlet to inlet 1 (air) and set a velocity inlet to inlet 2 (mixture).

Thanks

ozy · April 25, 2014, 09:23

Hi,

If you found the solution please let me to know.

My mail adresse : ooguzaydinn@gmail.com

Mohawk · May 9, 2014, 11:51

In creating model you need to draw two inlets and then naming them 8 mesh inlet 1 ,2
And in fluent specify velocity inlet

aarratia · May 12, 2014, 12:16

hey guys,

I am having the same problem. I already have 2 inlets created and meshed. My problem is that when I select "Air" for the first inlet, the other one changes from "mixture" to "Air" aswell. The same thing happens the other way around. What's going on?

niazaliahmed · May 28, 2014, 00:06

Me too facing the same problem in ansys fluent.

Have you found any solution yet?

In Star-CCM+, we select fluids and the volume fraction of individual phase / fluid appears under the boundaries.

delfel · May 28, 2014, 16:42

If it's a multiphase problem, you specify the conditions for each phase at the boundary. You do this by selecting each phase under the "Phase" dialog box in the boundary conditions panel. That way you can specify the velocity (or mass flow) for each phase at the two inlets.

This problem sounds like it could be more of a species transport problem than a multiphase problem -- if you use the species transport model, you specify the mass weighting of each phase at the boundary using the species tab for the boundary. Pretty sure that's explained clearly in the manual.

April 1, 2014, 08:36	Two Fluids air and mixture	#1
guihds New Member Guilherme Henrique Dias Silva Join Date: Nov 2012 Posts: 2 Rep Power: 0	Hello, I'm trying to simulate a object with two entries, the first one only air and the second one mixture (CH4 and H2S). How can I do this? I wanna set a velocity inlet to inlet 1 (air) and set a velocity inlet to inlet 2 (mixture). Thanks ozy likes this.

April 25, 2014, 09:23		#2
ozy New Member oguzayin Join Date: Jan 2014 Location: France Posts: 12 Rep Power: 13	Hi, If you found the solution please let me to know. My mail adresse : ooguzaydinn@gmail.com Last edited by ozy; April 29, 2014 at 10:12.

May 12, 2014, 12:16	inlet BC's	#4
aarratia New Member arrmando Join Date: May 2014 Posts: 16 Rep Power: 12	hey guys, I am having the same problem. I already have 2 inlets created and meshed. My problem is that when I select "Air" for the first inlet, the other one changes from "mixture" to "Air" aswell. The same thing happens the other way around. What's going on?

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May 9, 2014, 11:51		#3
Mohawk Member Mustafa Join Date: May 2013 Posts: 54 Rep Power: 13	In creating model you need to draw two inlets and then naming them 8 mesh inlet 1 ,2 And in fluent specify velocity inlet

May 28, 2014, 00:06		#5
niazaliahmed New Member Niaz Ali Ahmed Join Date: Jun 2010 Posts: 14 Rep Power: 16	Me too facing the same problem in ansys fluent. Have you found any solution yet? In Star-CCM+, we select fluids and the volume fraction of individual phase / fluid appears under the boundaries.

May 28, 2014, 16:42		#6
delfel New Member Sean Delfel Join Date: Aug 2009 Posts: 27 Rep Power: 17	If it's a multiphase problem, you specify the conditions for each phase at the boundary. You do this by selecting each phase under the "Phase" dialog box in the boundary conditions panel. That way you can specify the velocity (or mass flow) for each phase at the two inlets. This problem sounds like it could be more of a species transport problem than a multiphase problem -- if you use the species transport model, you specify the mass weighting of each phase at the boundary using the species tab for the boundary. Pretty sure that's explained clearly in the manual.