Date of Award
Master of Science in Astronautical Engineering
Department of Aeronautics and Astronautics
Paul I. King, PhD
This research studies the species distribution profiles of methane/ethylene bi-components at downstream locations filled with subcritical nitrogen in a closed chamber. Unique thermodynamic and transport properties of supercritical fluids along with phase transition phenomena during fuel injection process can significantly change combustion characteristics inside a scramjet combustor. Plume properties of supercritical jets are of great interests to the studies of fuel/air mixing and subsequent combustion. The primary goal of this research is to help to clarify whether there is any preferential condensation within the condensed jets. The Raman Scattering technique is used to quantify spatial distribution of injected methane and ethylene. Each species distribution profile is developed in terms of mole fraction. Results demonstrated there is ethylene preferential condensation within the supercritical bi-component mixture of the jet. It also showed the condensation phenomenon is less desirable for combustion.
DTIC Accession Number
An, Young Man, "Raman Scattering Study of Supercritical Bi-Component Mixtures Injected into a Subcritical Environment" (2007). Theses and Dissertations. 2996.