The chemical reactor concept, usually based on a homogeneous mixture, is extended to non-homogeneous two-phase flows study the impact of preferential segregation autoignition an n-heptane spray in air. To introduce inhomogeneities, two-dimensional reactors are resolved thanks direct numerical simulations (DNS) with Eulerian/Lagrangian description follow evolution carrier phase and dispersed eva...

• CFD simulations of autoigniting underexpanded methane jets at high pressure. Quantification the effect injection parameters on autoignition delay. Derivation a semi-empirical correlation and comparison with an Arrhenius model. Effect variations location in physical space. Jet characterization terms global Reynolds local Damköhler numbers. This work constitutes numerical investigation high-pre...

Autoigntion and front propagation behavior in Low Temperature Combustion (LTC) engine environments is investigated in this paper. First, non-reacting 3D engine simulations are conducted to investigate different mixture formation scenarios that might exist in LTC engines prior to autoignition. It is found that depending on the timing of fuel spray injection and the level of wall heat loss, two d...

Experimental and numerical studies are conducted on the thermal, chemical and dilution effects of buffer gas composition on autoignition of dimethyl ether (DME). The buffer gases considered are nitrogen (N2), a mixture of N2 and argon (Ar) at a mole ratio of 50%/50% and a mixture of Ar and carbon dioxide (CO2) at a mole ratio of 61.2%/38.8%. Experiments are performed using a rapid compression m...