Foundational Fuel Chemistry Model Version 2.0 (FFCM-2)

Foundational Fuel Chemistry Model Version 2.0 (FFCM-2) is a reaction model for the combustion of H₂, CO, CH₂O, and C_1-4 hydrocarbons. FFCM-2 is based on elementary reaction kinetics, and assimilates over 1000 sets of legacy combustion data dating back to the 1930s’. The model is optimized, uncertainty-minimized, and validated against fundamental combustion data over a wide range of thermodynamic conditions.

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The FFCM project

The Foundational Fuel Chemistry Model (FFCM) project is the result of a long-term research collaboration between Prof. Hai Wang’s group at Stanford University and Dr. Gregory Smith of SRI International. Its primary objective is to advance an accurate, uncertainty-minimized reaction model for combustion of small hydrocarbon fuels by assimilating large sets of legacy fundamental combustion property data into the state of knowledge of elementary reaction kinetics. The current FFCM Version 2 (FFCM-2) extends from the previous FFCM Version 1 (FFCM-1) effort to cover a wider range of relevant C₀-C₄ fuels.

Current model release

• consists of 96 C₀-C₄ species and 1054 reactions.
• is optimized against 1192 sets of fundamental combustion data that span a wide range of thermodynamic conditions, including laminar flame speeds, shock tube ignition delay time and speciation data collected in shock tubes and flow reactors.

The FFCM-2 team

Current members

Previous members

How to cite

APA format

Y. Zhang, W. Dong, L. Vandewalle, R. Xu, G.P. Smith and H. Wang, 
Foundational Fuel Chemistry Model Version 2.0 (FFCM-2), https://web.stanford.edu/group/haiwanglab/FFCM2, 2023.

Bibtex format

@Misc{ZDV2023,
  author  = {Zhang, Yue and Dong, Wendi and Vandewalle, Laurien and Xu, Rui and Smith, Gregory and Wang, Hai},
  title   = {Foundational {Fuel} {Chemistry} {Model} {Version} 2.0 ({FFCM}-2)},
  journal = {FFCM-2 website},
  url     = "https://web.stanford.edu/group/haiwanglab/FFCM2",
  year    = {2023},
  }
  

A brief history and acknowledgements

The FFCM effort started in 2011 as a part of the DOE Combustion Energy Frontier Research Center (CEFRC) effort. The work continued with support from the Air Force Office of Scientific Research (AFOSR) since 2012, and more recently the Office of Naval Research (ONR). During the process, many researchers and colleagues contributed to the outcome of the model, notably

• Prof. Yujie Tao developed FFCM-1 for the combustion of H₂, CO, CH₂O and CH₄.

• Dr. Enoch Dames contributed to the original version of the FFCM-1 trial model through a critical review of some of the trial rate assignments.

• Dr. Elke Goos of DLR-Institute of Combustion Technology and Dr. Branko Ruscic of Argonne National Laboratory provided the thermochemical data of all species considered in FFCM-1, and many of the species considered in FFCM-2.

• Prof. Ronald K. Hanson and Dr. David F. Davidson of Stanford University determined some of the key reaction rate coefficients for FFCM-1.

• Prof. Fokion N. Egolfopoulos of University of Southern California provided useful discussion of the laminar flame speed data.

The combustion reaction chemistry community commonly uses the wording reaction mechanism to describe fundamental combustion chemistry. We prefer the use of reaction model. A mechanism describes how nature works; a model tries to describe and mimic that nature.