How to run using a mechanism with arbitrary reaction order

[JayStandridge]

PelePhysics has the Westbrook and Dryer two-step mechanism as well as the Jones and Lindstedt four-step mechanism, these global mechanisms have non-stoichiometric reaction orders and seem to be unsupported. I would like to study these mechanisms, is there a way to enable them, or get the convert.sh to work for these mechanisms?

Thanks in advance

[marchdf]

@malihass has looked into this and may be able to comment better than I can.

[malihass]

Thanks for the question!
There was a recent update in PelePhysics (AMReX-Combustion/PelePhysics#414) that enabled the use of arbitrary order mechanisms chem-CH4-2step and JL4 (which you referred to) including with analytical chemical Jacobian. The list_mech file was also updated to reflect this change. Note that I tested these mechs in 0D only.
If you update your PelePhysics submodule, you should be able to run these mechs.