Evaluation of the surrogates capacity to reproduce the laminar burning velocities and the sensitivity to stretching of a commercial kerosene under constant volume combustion conditions

These last years, aircraft manufacturers and environmental international bodies have set drastic targets concerning turbo-engines pollution consumption reduction. To reach the objectives of pollutant emission reductions, innovative solutions such as constant-volume combustion are in development. Characterizing propagation a kerosene-air flame this kind is necessary. Particularly, knowledge fundamental properties like laminar burning velocity adiabatic conditions can be useful for design efficient turbo-engines. A new spherical chamber developed Institut PPRIME associated post-processing procedure first validated using n-decane/air premixed flame, good agreement obtained with literature. Measurements velocities Markstein lengths commercial kerosene/air mixture kerosene surrogates/air then performed at various temperatures (T0 = 400 K to 470 K), pressures (P0 0.1 MPa 0.5 MPa) equivalence ratios (? 0.6 1.5). Two mono-component surrogates tested representative (n-decane n-dodecane), two multi-component surrogates: Dagaut surrogate (n-decane/n-propylbenzene/n-propylcyclohexane) MURI2 (n-dodecane/iso-octane/1,3,5-trimethylbenzene/n-propylbenzene). Additionally, numerical simulations JetSurF 2.0 Luche reduced chemical kinetic mechanism, representing respectively surrogate. They able represent correctly experimental measurements. comparison different employed also evaluate ability these reproduce kerosene.