Impact of the chemical description on direct numerical simulations and large eddy simulations of turbulent combustion in industrial aero-engines

摘要: A growing need for numerical simulations based on reliable chemistries has been observed in the last years order to develop new technologies which could guarantee reduction of enviromental impact air transport. The description combustion requires use detailed kinetic mechanisms most hydro-carbons. Their turbulent simulation is still prohibitive because their high computational cost. Reduced and tabulation methods have proposed over-come this problem. Since all these reductions developed laminar configurations, thesis proposes evaluate performances configurations such as a DNS premixed Bunsen methane/air flame LES an experimental PREC-CINSTA burner. are analysed terms structure, global burning parameters, length, prediction major species concentrations pollutant emissions. An priori methodology one-dimensional unstrained strained flames mechanism capability predict three-dimensional features therefore proposed. On one hand when building reduced scheme, its requirements should be fixed compromising cost, robustness chemical desired quality results. other hand, or results anticipated testing flames.