CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

simulating two different gases

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

LinkBack Thread Tools Display Modes
Old   December 29, 2013, 07:32
Default simulating two different gases
Join Date: Sep 2012
Posts: 60
Rep Power: 7
achyutan is on a distinguished road

I would like to know how to simulate two different gases in same domain in compressible flow solver. I use a modified form of rhoCentralFoam.

Domain is a cylindrical pipe with two internal diaphragms. I want to specify gases with different densities in the partitioned regions. I don't think it is a multi-phase flow type. The two fluids do not interact. It is just the transfer of loads that I am looking at.
The gases are modeled by same eqn of state. I just want to change the density.

As I post, I think about another option as to breakup the internalField into two so I can specify different initial densities. I don't know if its possible in openfoam.

suggestions would be sincerely appreciated.
achyutan is offline   Reply With Quote

Old   December 30, 2013, 07:36
Senior Member
Bernhard Linseisen
Join Date: May 2010
Location: Magdeburg/Geneva
Posts: 182
Blog Entries: 1
Rep Power: 9
Linse is on a distinguished road
Hi Achyutan,

how about using "reactingFoam" and switching off the chemistry solution part?

Linse is offline   Reply With Quote

Old   December 31, 2013, 05:11
Join Date: Sep 2012
Posts: 60
Rep Power: 7
achyutan is on a distinguished road
Hi Bernhard,
Thank u for your response.
I don't have much exp using reactingFoam. Also, I am using godunov type schemes for shock capturing which i guess i cannot use in reactingFoam. Of course, i can modify it to my use.

Now, I want to know if i use splitmeshRegions utility can i specify two different gases ?
if yes, how to do it ?
achyutan is offline   Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
2D simulation for mixing two non-reacting gases arun.mechie FLUENT 17 August 3, 2016 08:31
Injecting Two Different Gases ERPLCFD FLUENT 1 October 12, 2013 11:21
Can compressibleTwoPhasesEulerFoam calculate two miscible Gases with each other? Kenna OpenFOAM Pre-Processing 0 October 10, 2013 10:32
Exhaust gases dispersion simulation in open atmosphere maazz FLUENT 0 June 28, 2013 11:07
modeling a mixture of gases franciscotovar CFX 0 October 17, 2006 12:41

All times are GMT -4. The time now is 18:28.