I am asking if there is a good reduced or detailed chemical kinteic reaction mechanism to simulate hydrogen enriched methane flame
Based on my experience, the San Diego (SD) mechanism would be my first choice (http://web.eng.ucsd.edu/mae/groups/combustion/mechanism.html). It's been around for a while and is well maintained and validated. As a note: the mechanism is only slightly reduced, and is overall quite efficient. Hope this helps.
I'm not sure, if it suits your special topic, but since it is a very common one and can handle hydrogen and methane combustion: What about the GRI-Mech from Gas Research Institute?
Thank you to all
I tested these two mechanisms with Chemkin essentially for the laminar speed at variant hydrogen blends. I think GRI is better than San Diego
but my problem is that these kind of mechanisms are too large to be implemented in the simulation of turbulent flame (pdf monte carlo method). so a reduced one could be a better solution.
Be careful: GRI-Mech (even 3.0) is relatively old and doesn't benefit from newer kinetics research. If you're looking for small mechanisms, there are some reduced mechanism available here: http://combustion.berkeley.edu/drm/ (one with 19, one with 22 species). Since they're based on GRI 1.2 (which is quite old), you'd have to do some careful validation with up-to-date mechanisms (I'd recommend USC mech II: http://ignis.usc.edu/Mechanisms/Model%20release.html ... it's more complete than the SD mechanism). Another group you could look at is Galway: I haven't used any of their mechanisms (http://c3.nuigalway.ie/mechanisms.html), but I would trust those as well.
Im agree with Dr. Ingmar,,I think you need take a look at GaIway
http://c3.nuigalway.ie/mechanisms.html
Very interesting topic.
Recently, I am investigating different combustion mechanisms which are suitable for methane gas. Generally, there are four typical methane combustion mechanism, such as GRI 3.0, USC mech 2, and Konov mech 0.5, and San Diego mech. I have collected GRI 3.0, USC mech 2, and Konov mech 0.5 mechanisms. Do you guys have the San Diego mech? Could please share this combustion mechanism to me? I would greatly appreciate you help.
Thanks,
Xiongbo
Duan Xiongbo The chemical kinetic models from UC San Diego can be found here: https://web.eng.ucsd.edu/mae/groups/combustion/mechanism.html
As an addition, I have seen in 2D asymmetric simulations that CH prediction is not accurate using GRI3.0. I would also go for Galway models (although it depends on which kind of simulations and targets you are looking for).
Hi Claudia-Francisca Lopez-Camara,
Thank you very much. Right, some papers also mentioned that GRI 3.0 did not predict very well. Thanks for your nice suggestion.
Xiongbo
Just saw a good paper at asme turboexpo 2019 from McGill Univ that looked at context of pressure effects. while it was methane/air seemed galway was the most accurate in reflecting the rather minimal pressure effect when at lean conditions. Same effect shown by correa in 1980s.
I would recommend the recent CHON mechanism of Peter Glarborg (see review article in PECS), which covers C0-C2 chemistry quite well. A simple reduction strategy could be used to eliminate all the N-containing species.
Depending on when you need to do the modelling work, there is a mechanism due to be published by Jim Miller, Stephen Klippenstein, et al., the H/C/O “Theory-Informed Chemical Kinetic Model” , which covers C0−C3 chemistry in depth, as well as some larger species that result from C3−C3 coupling.
I have been working with this mechanism recently and would strongly recommend using one of these over GRI or other older models.
Vincent Mcdonell, would you be willing to share the title of this paper please? Having trouble finding it and I believe it would be of interest to me!
Many thanks,
James.
Article A reduced mechanism for the prediction of methane-hydrogen f...
Dear all,
I am working with simulation of Methane- pure Oxygen combustion in chemkin. Do you know a reduced kinetic mechanism associated with only oxygen, not N2 ? I deleted all N related reactions, but it could not converged.
Thank you
Hadi Ebrahimi, what mechanism are you using and what are you trying to simulate? I would suspect that, in general, that your problem isn't N2, but the problem set-up.
However, you can pretty rapidly generate a mechanism specific to your needs using the Reaction Mechanism Generator (rmg.mit.edu)
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