Direct Numerical Simulation of Flame-Wall Interaction for a Forced Laminar Flame

Abstract

This study investigates the flame-wall interaction of a two-dimensional (2D) laminar premixed flame using direct numerical simulation (DNS). The flame is excited by velocity perturbations at the inlet for a range of forcing frequencies. A single-step chemistry model is used to perform the simulations. The wall is assumed to be at the same temperature as the fresh gas. The flame behavior is closely analyzed by using the contours of various parameters. This qualitative inspection is followed by determination of the Peclet number (Pe) in each case, in order to understand the nature of the flame quantitatively. A combination of the qualitative and quantitative methods provide more clarity on the..