Ignition processes in the hydrogen-oxygen system were simulated by solving the corresponding conservation equations (i.e., conservation of mass, energy, momentum, and species mass) for one-dimensional geometries using a detailed reaction mechanism and a mUltispecies transport model. An additional source term in the energy conservation allowed the treatment of induced ignition, and a realistic m...

In order to contribute to the auto-ignition and emission control for Homogeneous Charge Compression Ignition (HCCI), a kinetic multi-component mechanism, containing 62 reactions and 49 species for mixtures of n-heptane, iso-octane and toluene is validated in this work, comparing for the concentration profiles of the fuel, the total hydrocarbons, O2, CO2, CO, acetaldehyde and iso-butene. These s...

Kinetic modelling of Biofuels: Pyrolysis and Auto-Ignition of Aldehydes Matteo Pelucchi*, Kieran P. Somers, Ultan Burke, Chiara Saggese, Alessio Frassoldati, Eliseo Ranzi, Henry J. Curran, Tiziano Faravelli Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Milano, Italy Combustion Chemistry Centre, National University of Ireland, Galway, Ireland matteo.p...

This numerical study deals with the hazardous ignition of a jet flame in vitiated co-flow. A novel formulation, based on passive scalar variable, will be presented to predict hydrogen auto-ignition events. The model, derived from theoretical analysis Jacobian, correctly describes appearance and absence complex configurations initial thermodynamic mixture conditions. No chemical reaction species...

Numerical investigations have been conducted on the effect of the internal geometry of a local contraction on the spontaneous ignition of pressurized hydrogen release through a length of tube using a 5-order WENO scheme. A mixture-averaged multi-component approach was used for accurate calculation of molecular transport. The auto-ignition and combustion chemistry were accounted for using a 21-s...