(25e) Nanoparticle Formation in Counter-Diffusion Flames

The microstructures of atmospheric pressure, counter-flow, propane diffusion flames have been studied numerically using the multiscale AMPI (Atomistic Model for Particle Inception) code and the availability of experimental data have been helped to guide and validate the numerical approach. For diffusion flames, flow characteristics play an important role in the formation, growth, and oxidation of particles and sooting characteristics can be significantly affected by the flame location. Counterflow diffusion flames are usually located on the oxidizer side, but upon appropriate dilution of the fuel and oxidizer streams, the flame can be moved to the fuel side. The AMPI code is used to study the formation of nanoparticles in different combustion regimes with the specific goal to address the importance of oxidation on particle growth.