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

chemical reaction problem

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 5, 2001, 11:16
Default chemical reaction problem
  #1
Benoit
Guest
 
Posts: n/a
Hi ! I'm student in France and I TRY to use Fluent… I'd like to simulate a quite complex reaction. So, I've to use an UDF for generating sources. To understand how to proceed I try with a simple reaction just below :

A + B -> C with r (kg/m3.s) = 1017 exp (-105/RT) . CA.CB

I've compared the results obtained with the reactions panel and those obtained with UDFs. In order to obtain the same results I've to multiply the preexponential factor A by 100 (so 1019) in my UDFs model.

Can anybody tell me the reason? I'm thanking you a lot for any suggestion.

  Reply With Quote

Old   July 5, 2001, 14:12
Default Re: chemical reaction problem
  #2
Paul Izabel
Guest
 
Posts: n/a
I've had similar problems with chemical reactions and the Arrhenius model. Might be a problem with your units - check them. good luck, Paul
  Reply With Quote

Old   March 14, 2013, 15:56
Default arrhenius constants units
  #3
New Member
 
hossam ali
Join Date: Jan 2013
Posts: 9
Rep Power: 13
hossam_ali is on a distinguished road
hi i want to know the units of arrhenius constants applied in fluent

thanks
hossam_ali is offline   Reply With Quote

Reply

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
problem about porous media and surface reaction Jeff Lee FLUENT 3 November 24, 2011 14:46
Problem implementing DETAILED REACTION MECHANISM Phil FLUENT 0 May 5, 2007 12:38
Simpler Chemical Reaction Problem Sam Siemens 7 February 7, 2006 10:28
chemical reaction - decompostition La S. Hyuck CFX 1 May 23, 2001 01:07
UDF : Chemical Reaction in Catalytic Converter adhimac FLUENT 1 March 27, 2001 15:04


All times are GMT -4. The time now is 00:14.