CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

How to create pressure outlet for a single specie?

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   February 11, 2020, 17:36
Post How to create pressure outlet for a single specie?
New Member
Eman Resu
Join Date: Apr 2019
Posts: 1
Rep Power: 0
Eman Resu is on a distinguished road
Dear All,

I'm struggling with the problem: I would like to create a BC (pressure outlet) which will allow only one specie of the mixture to go through it.
For example, I have air and nitrogen. I would like this BC to let air go through and for nitrogen it should act like a wall.
Is it possible?
Eman Resu is offline   Reply With Quote

Old   February 12, 2020, 05:26
Default Filter
Senior Member
vinerm's Avatar
Join Date: Jun 2009
Location: Nederland
Posts: 2,946
Blog Entries: 1
Rep Power: 35
vinerm will become famous soon enough
In a species model, components are not treated separately in terms of convection. However, their diffusion is on component basis. In the off-the-shelf tool, as far as I know there is no provision to do what you want to. In the real world as well this would require some kind of a filter; a surface that makes one of the component deposit or convert into some other species by reaction, such as in catalytic converter.

You have to look into the objective and how this happens in the real world for your process, by deposition, active filtering, or reaction. Then you can implement it using UDF or some other approach.

PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.
vinerm is offline   Reply With Quote


oulet bc, species, species tranport

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pressure Boundary Inlet and Outlet AS_Aero CFX 5 March 28, 2018 10:46
Pressure inlet vs outlet position, transient, time dependent pressure and gravity silent2608 FLUENT 0 February 6, 2016 10:19
Pulsatile pressure inlet with pressure outlet a.lynchy FLUENT 3 March 23, 2012 13:45
pressure inlet & outlet. help ASAP Plz engahmed Main CFD Forum 0 June 13, 2010 15:34
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11

All times are GMT -4. The time now is 17:25.