CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Surface oxidation reaction possible?

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

LinkBack Thread Tools Display Modes
Old   October 28, 2013, 21:14
Default Surface oxidation reaction possible?
Join Date: Feb 2010
Location: Australia
Posts: 65
Rep Power: 9
RossFS is on a distinguished road
I am currently trying to replicate the modelling of some basic coal self heating (ie <70degC) oxidation that was performed in ANSYS Fluent and published in a journal paper.

The basic setup was laminar flow in a porous medium using Darcy's law. The spontaneous heating of coal was modelled as a surface chemical reaction - coal oxidation - occurring on the coal surface in a porous medium. The reaction they modelled was:
Coal + O2 -> CO2 + 0.1CO + 300kJ/mol-O2

Done using the Arrhenius relation.

I took cues from the surface reaction tutorial provided with Fluent to set this up but I can't get any heat evolution even though I setup surfaces to run this reaction and worked out the enthalpy of formation for this version of coal. Wall surface reactions were turned on. The documentation makes it look like surface reactions are just for the deposition of materials and not for any sort of oxidation.

Should Fluent be able to run this simulation?

Any help appreciated.
RossFS 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
Catalyst Modelling Boundary Problem (Surface reaction) Fritz STAR-CCM+ 0 August 6, 2013 09:10
Surface Reaction Rate, surface concentration. MarcusW FLUENT 0 April 4, 2012 14:00
[ICEM] Problems with coedge curves and surfaces tommymoose ANSYS Meshing & Geometry 0 August 5, 2011 16:02
[ICEM] Automatic mesh generation script surface intersection problem stuart23 ANSYS Meshing & Geometry 0 May 13, 2011 01:10
surface reaction Jason FLUENT 1 August 20, 2003 22:01

All times are GMT -4. The time now is 15:03.