Abstract
Abstract This chapter is based on our experience in characterizing and formulating surrogate compositions to emulate prevaporized and multiphase global combustion behaviors of jet fuels. It is not our purpose here to provide an exhaustive review of the literature on this subject. Our purpose is to describe a logical thought process toward the development of numerical methods that analyze the interactions of real fuels in applied combustion systems. The hypotheses emphasize the relevance of the controlling global combustion behaviors that are variable from fuel to fuel and from condition to condition as a necessary basis target set for producing model descriptions that can be used in computational engineering design tools. The major goal is to develop the lowest dimensional attributes needed to replicate these behaviors and to minimize the number of chemical species that are necessary to produce high fidelity representations of a specific real fuel. This challenge is intrinsically necessitated by the very large numbers of molecular species that comprise liquid transportation fuels. The motivations for the approach are varied: to produce information that can be used to screen new fuels as to their distinctive combustion behaviors relative to those already in use; to reformulate compositions such that experimental studies may better identify physical/chemical effects that are important to multiphase combustion; and, in addition, to the advance modeling tools that are valuable for parametric computational engineering design (which is the overarching subject of this book). This chapter emphasizes the progress made on emulating fully prevaporized combustion behaviors and surrogate formulation methods that can be adapted to consider both physical and chemical property emulations in the future. While the chapter describes concepts in terms of applications to jet fuels, the extension of similar concepts to other transportation fuels is apparent.
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