CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

Species Source Term

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 28, 2007, 11:24
Default Species Source Term
  #1
Johannes
Guest
 
Posts: n/a
Hi there,

I am currently modelling a reactive flow using the GRI 2.11 mechanism. Is there a possibilty to obtain the species production rate in a cell with a function like C_R(c,t) to obtain the density? I would be really glad, if you help me.

Greetings, Johannes.
  Reply With Quote

Old   March 28, 2007, 17:40
Default Re: Species Source Term
  #2
Allan Walsh
Guest
 
Posts: n/a
You can get the species concentration - see the UDF manual.
  Reply With Quote

Old   March 29, 2007, 18:58
Default Re: Species Source Term
  #3
Johannes
Guest
 
Posts: n/a
Yeah, I know, but I need to get the source terms of the species concentration or something similar. :/
  Reply With Quote

Old   March 30, 2007, 17:46
Default Re: Species Source Term
  #4
Allan Walsh
Guest
 
Posts: n/a
For the GRI reaction rate, you would need to have the concentrations of the reactants either on a mass or mole basis. These can be converted using the fluid denisty and species molecular weights. Fluent has variables for the concentrations.

The source terms (for depletion of products, formation of reactants, energy, etc) are calculated from the concentrations, and specified reaction (i.e. GRI mechanism). I don't think the source terms are readily accessible, although you could write a UDF to do that.

Good luck.
  Reply With Quote

Reply

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
swak4foam building problem GGerber OpenFOAM Installation 54 April 24, 2015 16:02
How to define a transient species source term? aleisia FLUENT 3 March 7, 2011 23:58
Large source term in species equation MACFD FLUENT 4 January 4, 2011 15:16
DxFoam reader update hjasak OpenFOAM Post-Processing 69 April 24, 2008 01:24
DecomposePar links against liblamso0 with OpenMPI jens_klostermann OpenFOAM Bugs 11 June 28, 2007 17:51


All times are GMT -4. The time now is 10:53.