GRI30

[Antonio D'Amato]

Which kind of fuel can be used in GRI30? Such as Gasoline, Diesel and ethanol? Thanks for attention.

[Bryan W. Weber]

Dear Antonio,

As indicated on the webpage for GRI-3.0: http://combustion.berkeley.edu/gri-mech/version30/text30.html

It should be used for natural gas combustion, i.e., C2H6 and smaller.

Best,
Bryan

[Alan Thomason]

Hello Antonio,

I do not consider myself an expert, but the small amount I have learned with the help of this site and from many helpful people in the combustion field might be helpful to you.  I have been trying to model the combustion of octane, as a start, and then proceed to ethanol and methanol for some background help to my university program.  The GRI30 file that I have does not even include c8h18.  The research that led to this file is focused on CH4 combustion (refer to link below), so I did not feel satisfied that I should continue.

http://combustion.berkeley.edu/gri-mech/overview.html

I found a lead through a French research site, which actually led back to a Lawrence Livermore file led by a researcher (Curran) who is now at a University in Ireland.  There are two iso-octane mechanisms listed below, but I found more background information on the Curran method.

http://www.cerfacs.fr/cantera/mechanisms/iso-oct.php

The Lawrence Livermore site actually contains more recent combustion files, but I got stuck and was not able to convert them properly, despite a lot of help received from this forum. 

Next problem...for my purposes I needed to show the species NO, which is not present in the Curran files.  I was advised (and it seemed to work) to take the NO mechanism from the GRI30 file and combine it with the Curran file.  The results show a good correlation with what is available, for instance the C8H18 combustion figure in Heywood, 1998.  If this is what you need, I would be happy to send it to you but I must rename it and include text in the file to show that this was put together for educational purposes and not with the rigor of a professional effort.

Best Regards,

Alan Thomason

On Tuesday, June 23, 2015 at 6:38:20 AM UTC-4, Antonio D'Amato wrote:

[Alan Kong]

I think the LLNL mechanism might be suitable for your application of fuel. They had a wide range of mechanism to choose from and I think they have a mechanism for Diesel Surrogate that u might be about to use so u can check that out.

GRI3.0 is for CH4 or natural gas combustion and only contain mainly C1 and C2 chemisty with only C3 chemistry consisting of C3H8 and C3H7. Its mainly used for methane combustion application.

Cheers

Alan