BAVARIAN RESEARCH ASSOCIATION TURBULENT COMBUSTION
Modelling and Numerical Simulation
In many technically relevant combustion processes turbulence is a key feature. Commonly, turbulence is modelled using the Reynolds-averaged Navier-Stokes equations, including some turbulence closure. This methodology proves to be limited when complex processes like turbulent mixing or statistically unsteady combustion processes have to be simulated. Large Eddy Simulation (LES) is believed to bear high potential for accurate predictions. The LES-methodology tries to resolve large spatial and temporal scales only. Small scales, i.e. those smaller than a certain cutoff in space and time, are supposed to behave in a universal manner for which rather simple subgrid-scale closures are supplied. LES is far from being a black-box-method. Besides physical insight, large computing resources are still necessary to improve our knowledge. Both prerequisites are available in Bavaria. Namely the equipment with supercomputers and the know-how in LES are excellent. Therefore, this research field is a yielding target for the research and technology location Bavaria. Considering the always growing computing power and algorhithmical improvements, industrial applications are in reach shortly. Thus, using the common resources, the development of suitable tools to perform Large Eddy Simulations of turbulent combustion processes should be given high priority and this is the aim of the research group B.
B4 Modeling of inhomogeneously premixed turbulent flames with large eddy