Interaction of a non-premixed flame with an inert wall
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The characteristics of nonpremixed flame-wall interaction have been studied in a reacting vortex ring configuration. A finite duration axisymmetric methane jet is injected into a quiescent oxidizer ambient to generate a laminar vortex ring. Fuel and oxidizer temperatures are adjusted such that auto-ignition takes place and results in the formation of a nonpremixed flame surrounding the vortex ring. The methane combustion is modelled using detailed kinetic mechanism CR13.0 with the reactions and the species containing nitrogen removed, except N 2 . The flame is propelled by the ring induced velocity and interacts with an isothermal inert wall which is perpendicular to the direction of the flame propagation. Interactions have been studied for two different wall conditions---one with and one without a thermal boundary layer. Heat release rate, vorticity, and temperature fields have been examined during the interaction.* (Abstract shortened by UMI.) *This dissertation is a compound document (contains both a paper copy and a CD as part of the dissertation). The CD requires the following system requirements: Windows MediaPlayer or RealPlayer.