A skeletal mechanism with 54 species and 269 reactions was developed to predict pyrolysis and oxidation of n-dodecane as a diesel fuel surrogate involving both high-temperature (high-T) and low-temperature (low-T) conditions. The skeletal mechanism was developed from a semi-detailed mechanism developed at the University of Southern California (USC). Species and reactions for high-T pyrolysis and oxidation of C 5-C 12 were reduced by using reaction flow analysis (RFA), isomer lumping, and then merged into a skeletal C 0-C 4 core to form a high-T submechanism. Species and lumped semi-global reactions for low-T chemistry were then added to the high-T sub-mechanism and a 54-species skeletal mechanism is obtained. The rate parameters of the low-T reactions were tuned against a detailed mechanism by the Lawrence Livermore National Laboratory (LLNL), as well as the Spray A flame experimental data, to improve the prediction of ignition delay at low-T conditions, while the high-T chemistry remained unchanged. The skeletal

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The dynamic processes of ignition and turbulent flame development in a turbulent impinging flame are studied using large eddy simulation (LES). The Dynamic Thickened Flame (DTF) model is extended to incorporate realistic chemical mechanisms to simulate the partially premixed flames due to flame impingement on a solid wall. A new chemical mechanism with 22 species 66