Two-dimensional imaging approaches are used to examine qualitatively the spatial distribution of the particle formation zone. The objective of these studies to better understand the basic phenomena that control particle size in reacting flow systems. Such processes are important to the industrial production of high quality powders and their applications. Scientific Research A systematic and detailed study of the formation of soot particles in well-characterized laminar diffusion flames is being conducted. The research objective is to provide a fundamental understanding of soot particle formation, growth, and oxidation.
Specific attention is given to the effects of operating pressure and fuel species.
Laser-based diagnostics are used to characterize the soot particles as well as other flame properties. The next generation of gas turbine engines is expected to operate at higher pressures and temperatures, using broader specific fuels. These developments will have serious implications for the production of soot leading to increased radiative transfer to combustion walls as well as increased particulate emissions. The present research effort is aimed at contributing to the solution of these problems. The utilization of high energy density fuels offers significant benefits in volume limited propulsion applications if suitable solutions to the chemistry and engineering challenges posed by these fuels can be found.