Simulation of Turbulent Flows with and without Combustion with Emphasis on the Impact of Coherent Structures on the Turbulent Mixing

The analysis of turbulent mixing in complex turbulent flows is a challenging task. The effective mixing of entrained fluids to a molecular level is a vital part of the dynamics of turbulent flows, especially when combustion is involved. Turbulent mixing is a three-stage process of entrainment, stirring and diffusion, and the numerical simulation of turbulent mixing has to consider these three different phenomena. To achieve high-fidelity results, time dependent simulations are mandatory.