  In this study, the thermochemical state during turbulent flame-wall
interaction of a stoichiometric methane-air flame is investigated using a fully
resolved simulation with detailed chemistry. The turbulent side-wall quenching
flame shows both head-on quenching and side-wall quenching-like behavior that
significantly affects the CO formation in the near-wall region. The detailed
insights from the simulation are used to evaluate a recently proposed flame
(tip) vortex interaction mechanism identified from experiments on turbulent
side-wall quenching. It describes the entrainment of burnt gases into the fresh
gas mixture near the flame's quenching point. The flame behavior and
thermochemical states observed in the simulation are similar to the phenomena
observed in the experiments. A novel chemistry manifold is presented that
accounts for both the effects of flame dilution due to exhaust gas
recirculation in the flame vortex interaction area and enthalpy losses to the
wall. The manifold is validated in an a-priori analysis using the simulation
results as a reference. The incorporation of exhaust gas recirculation effects
in the manifold leads to a significantly increased prediction accuracy in the
near-wall regions of flame-vortex interactions.
