The accurate prediction of combustion processes in turbulent reacting flows is essential for the design of advanced combustion technologies. Numerical simulation techniques become viable tools to address such design challenges if adequate models are available. In this work, computational models are developed for application to large-eddy simulation (LES). In particular, three critical modeling aspects are considered, namely local flame extinction and reignition, nitrogen oxide formation, and noise-generation by combustion. These models are integrated into the flamelet/progress variable formulation, thus allowing for a consistent treatment of different combustion-physical effects in a unified framework. The computational models are analyzed in a priori studies and applied to LES for different flame configurations, including turbulent jet flames and a realistic aircraft engine combustor. All LES models are validated using experimental data, and the underlying physical phenomena are discussed in great detail.

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