| Description of target | Sensitivity diagram | Prediction of GRI-Mech 3.0 |

DESCRIPTION OF THE TARGET

Target IG.St1a: Shock tube ignition delay

Mixture: CH4-C2H6-O2-Ar (3.29%-0.21%-7%-89.5%) , phi = 1.045, P = 6.1 atm, T = 1356 K

Reference: Spadaccini, L.J., and Colket, M.B., 'Ignition Delays in CH4-O2 and CH4-C2H6-O2 Mixtures,' (1994) Prog. Energy Combust. Sci. 20, 431.

TARGET VALUES
Experimental
(millisec)		 GRI-Mech 2.11 Trial Mech GRI-Mech 3.0
1.0 1.46 2.37 1.24

SENSITIVITY DIAGRAMS

The sensitivity spectra shown below were computed with a trial reaction mechanism composed of a set of 322 elementary reactions of 53 species.

Sensitivity coefficients with respect to rate coefficients Sensitivity coefficients with respect to heats of formation

Other targets