M.S. Mechanical Engineering
Henry M. Rowan College of Engineering
Francis M. Haas, Ph.D.
Committee Member 1
Krishan Bhatia, Ph.D.
Committee Member 2
Thomas Merrill, Ph.D.
prevaporized fuels, distillation, combustion behavior
Use of surrogates to emulate the combustion behaviors of prevaporized real fuels has been widely demonstrated in the literature. However, many combustion applications utilize atomized fuel sprays, and for these configurations, the assumption of fuel property homogeneity in prevaporized fuel combustion is tenuous. This work uses a simplified distilling droplet model to demonstrate a real potential for vaporization-coupled deviations from the single-valued combustion property targets used to characterize prevaporized combustion behaviors. To verify the model-based observations, flame blowout measurements from a custom-built annular spray burner rig are measured. Sets of essentially equivalent prevaporized jet fuel and gasoline surrogates suggested in the literature, and four nC9 surrogates composed of varying proportions of chemically similar n-alkanes are tested to examine blowout threshold variations driven by distillation behavior. The differing volatility characteristics of these surrogates emphasizes the influence of volatility on certain combustion behaviors (e.g., blowout) in a spray combustion environment. Noted variations in blowout limits (and also allowing for other limiting combustion behaviors not studied here) highlights the need to consider the coupling between distillation and combustion behavior.
Lefkowitz, Jay A., "AN EXAMINATION OF THE INFLUENCE OF DISTILLATION ON THE COMBUSTION BEHAVIOR OF APPARENTLY EQUIVALENT SURROGATE FUELS" (2021). Theses and Dissertations. 2934.