PERK mechanisms can be used for the combustion of the fuels listed in Table 2.2: Pseudo-Elementary Reaction Kinetics (PERK) mechanisms provided with the MFL. The mechanisms for those fuels are also listed in the table. PERK mechanisms have been optimized for ignition times for stoichiometric fuel/air mixtures at 10 atm over 700–2000 K. Recommended applications and ranges are:
Predicted characteristics: ignition times, laminar flame speeds
Emissions: NOx, CO, unburned hydrocarbons
Range of conditions: 700–2000 K, 10–100 atm, phi: 0.5–1.5, dilution or EGR: 0–25%
Note: PERK mechanisms are currently not designed to predict soot emissions.
Note: Thermodynamic and transport data used by PERK mechanisms are the same as those used by MFL full and skeletal mechanisms. Fluent users can use the Gasoline-Diesel-Biodiesel_PAH_NOx_therm_MFL<version>.dat and Gasoline-Diesel-Biodiesel_PAH_NOx_therm_MFL<version>.dat files that are located in the Ansys installation directory under \reaction\data\ModelFuelLibrary\full.
Table 2.2: Pseudo-Elementary Reaction Kinetics (PERK) mechanisms provided with the MFL
| Fuel | Surrogate Components | Species name | Number of species |
| Natural gas | 93 vol% methane/ 5% ethane/ 2% n-butane | 93 vol% ch4/ 5% c2h6/ 2% c4h10 | 36 |
| Propane |
93 vol% methane/ 5% ethane/ 2% n-butane | 93 vol% ch4/ 5% c2h6/ 2% c4h10 | 29 |
| Gasoline | iso-octane | ic8h18 | 35 |
|
22.4 wt% iso-octane/ 30.4% toluene/ 19.1% n-pentane/ 11.2% MCH/ 7.5% 1-hexene/ 7.3% 1,2,4-trimethyl benzene/ 2.1% n-butane | 22.4 wt% ic8h18/ 30.4% c6h5ch3/ 19.1% nc5h12/ 11.2% mch/ 7.5% c6h12-1/ 7.3% tmb124/ 2.1% c4h10 | 77 | |
| Diesel | n-heptane | nc7h16 | 34 |
| 36 wt% n-hexadecane/ 9.7% AMN/ 16.4% HMN/ 38.9% decalin | 36 wt% nc16h34/ 9.7% a2ch3/ 15.4% hmn/ 38.9% decalin | 58 | |
| Jet fuel | n-dodecane | nc12h26 | 34 |
| 36.6 wt% n-dodecane/ 32.2% heptamethylnonane/ 10.3% methylcyclohexane/ 20.9% 1,2,4-trimethylbenzene | 36.6 wt% nc12h26/ 32.2% hmn/ 10.3% mch/ 20.9% tmb124 | 72 |