Numerical database of highly-resolved turbulent flame-wall interaction simulations for model validation

The interaction of flames with walls and subsequent flame quenching can be a major cause of pollutant formation in many practical combustion applications. Because of this, a better understanding of flamewall interaction phenomena is required to optimize future combustion systems. In this work, direct numerical simulations (DNS) are used to study flame-wall interaction of a stoichiometric methane-air flame in a turbulent channel flow. The simulation employs finite rate chemistry and a computational mesh with 200 million cells to resolve the flame-wall interaction without turbulence and combustion model assumptions. The turbulent flow is generated from a separate inert channel flow DNS with periodic boundary conditions. The inert channel flow simulation and the reactive flame-wall interaction simulation are run on the HoreKa cluster at the Karlsruhe Institute of Technology (KIT) and the Hawk supercomputer at the High Performance Computing Center Stuttgart (HLRS) on up to 32768 CPU cores. The simulation results are compiled into a numerical database, containing full three-dimensional data as well as sampling of flame and turbulence properties on two-dimensional cutting planes and onedimensional lines for model validation. ... mehrIn total, the database consists of 3.5 TB of data. The DNS resolves the smallest length scales in the turbulence-flame-wall interaction zone, so that the database is suitable for developing advanced turbulent combustion models considering the effect of FWI.