PHYSICAL NANOSTRUCTURE CHARACTERIZATION OF FLAME SOOT FROM MXYLENE AND N-DODECANE JET SURROGATE FUELS.

摘要

Presently there is keen interest in particulate matter (PM) emissions from jet fuels. However, the chemical breakdown of real fuels is presently too complicated for detailed kinetic models given the myriad and intertwined pyrolysis and oxidation reactions. This then drives the interest in surrogates fuels that are designed to represent the performance behavior of jet fuels [1]. These are matched on the basis of physical properties such as boiling point and density, and chemical properties such as sooting tendency [2], H/C ratio [3] and autoignition temperature [4]. Beyond these consideration, Litzinger et al. in 2010 [2] proposed the threshold sooting index (TSI) as an additional criteria for determining jet surrogate fuel. In recognition of matched properties and reduced complexities, Pickett et al. in 2010 [5] used the surrogate jet fuel blend, 23% m-Xylene and 77% n-Dodecane (by volume fraction) to study turbulent fuel spray combustion at elevated pressures.