CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

compressible transient mixture of 3 gases - is there a suitable solver?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 5, 2010, 17:26
Question compressible transient mixture of 3 gases - is there a suitable solver?
  #1
New Member
 
Axel Tietjen
Join Date: Dec 2009
Location: Hamburg, Germany
Posts: 19
Rep Power: 7
Axel_T is on a distinguished road
Dear Foam-Users,

I have to simulate the flow and mixing of three different gases in a closed chamber with one inlet under raising pressure.

Since now I used rhoPisoFoam to see at least the flow and turbulence within the chamber while (some) gas streams in. But although I set up thermophysicalProperties, initial state and boundary conditions for the different gases, the related fieldvariables dissappear at the next timesteps. So I have to use another solver, I suppose.

But the multiphase solvers are incompressible or inmiscible.

And the engineFoam seems also suitable at the first look, but I can't see the gas-concentrations, when I examine the engineFoam tutorial's results.

Is there any possibility to setup a solver for this problem without writing or modifying some code?

I'd appreciate any Ideas about that.

greetings
Axel
Axel_T is offline   Reply With Quote

Old   January 15, 2010, 21:01
Default reactingFoam without reaction?
  #2
New Member
 
Axel Tietjen
Join Date: Dec 2009
Location: Hamburg, Germany
Posts: 19
Rep Power: 7
Axel_T is on a distinguished road
Dear Foamers,

I've found out that I could possibly use reactingFoam for my application. I thought that changing the values for "chemistry" in the chemistryProperties file to "off", would switch the reaction off.

When I run that solver with my case, everything seems fine, at first. I can see for example the concentration-fields of each spezies change over the first timesteps, but then the execution stops. The error ist the temperature raising above the specified (janaf) range.

I'll keep on trying with that solver, maybe it will run some day...
Axel_T is offline   Reply With Quote

Old   January 17, 2010, 01:24
Default
  #3
Senior Member
 
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,894
Rep Power: 26
alberto will become famous soon enoughalberto will become famous soon enough
Hi,

take a look at this:

Ammonium gas in the air

Best,
__________________
Alberto Passalacqua

GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as live DVD/USB, hard drive image and virtual image.
OpenQBMM - An open-source implementation of quadrature-based moment methods
alberto is offline   Reply With Quote

Reply

Tags
compressible, mixture, transient

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
compressible, 2D NS solver? john Main CFD Forum 2 September 16, 2008 00:16
Can a compressible solver solve incompressible ? jinwon park Main CFD Forum 17 December 13, 2007 06:00
2-D Euler Solver for compressible flow in Matlab Volkan Main CFD Forum 1 October 28, 2007 01:40
Which parallel solver is most suitable for my app? zonexo Main CFD Forum 1 November 17, 2006 10:46
Poisson Solver or suitable scheme Tingting Main CFD Forum 1 August 4, 2006 06:47


All times are GMT -4. The time now is 20:11.