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

problem about porous media and surface reaction

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 30, 2007, 20:31
Default problem about porous media and surface reaction
  #1
Jeff Lee
Guest
 
Posts: n/a
My fluent case: surface reaction on porous catalyst in a tube reactor. the detailed kinetic mechanism imported from chemkin file, reaction type is volumn and wall reaction in the porous zone. calculated with the finite-rate model and segrated solver -implicit. But after run, the reaction doesn't occur and the reaction rate always shows zero. why this happen? could anyone help me? Or can you provide me a case about this problem? thank you!
  Reply With Quote

Old   December 2, 2007, 02:16
Default Re: problem about porous media and surface reactio
  #2
mohanraj
Guest
 
Posts: n/a
If you have the reaction rate equation (Arrhenius type or other type) put it in an Excel sheet and calculate to see the order of magnitude(with the scaled temperature and molar concentration). Sometimes you need to check the units. The rate equation should yield KMole/m3s in fluent(volumetric reaction). If you take the reaction model constants from any literature pls. check it.

  Reply With Quote

Old   November 24, 2011, 13:38
Default help
  #3
New Member
 
golshadi
Join Date: Sep 2011
Posts: 14
Rep Power: 4
golshadi is on a distinguished road
hi Dear
I have a project like you (Jeff) mentioned here(I hope u read my Thread in this old post).Now I study the user guide of fluent but my mind is wandered to very things probably not need.(anyone that have good information) I would like guide me to best books,texts,sites,in this subject or even give me a case file and other things you think them help me. And at last please express what experimental data is required in porous catalytic reactor simulation in FLUENT(or CHEMKIN);also when can I use porous media model for packed bed catalysts (what is criterion).I appreciate you.
regards
golshadi is offline   Reply With Quote

Old   November 24, 2011, 13:46
Default help
  #4
New Member
 
golshadi
Join Date: Sep 2011
Posts: 14
Rep Power: 4
golshadi is on a distinguished road
hi Dear
I have a project like you (Jeff) mentioned here(I hope u read my Thread in this old post).Now I study the user guide of fluent but my mind is wandered to very things probably not need.(anyone that have good information) I would like guide me to best books,texts,sites,in this subject or even give me a case file and other things you think them help me. And at last please express what experimental data is required in porous catalytic reactor simulation in FLUENT(or CHEMKIN).I appreciate you.
regards
golshadi is offline   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
porous media combustion zuby FLUENT 1 September 11, 2014 15:44
combustion in porous media burner zuby ANSYS 0 July 27, 2009 02:26
how to set no-slip on the surface of porous media Nanjiang FLUENT 0 August 7, 2007 13:15
surface reaction, porous media Ali FLUENT 0 February 18, 2007 18:46
Porous media and chemical reaction pepa FLUENT 10 August 20, 2003 05:24


All times are GMT -4. The time now is 00:17.