Droplet vaporization for conventional and alternative jet fuels at realistic temperature conditions: Systematic measurements and numerical modeling

The desired reduction of fossil fuel consumption the aviation sector requires introduction alternative jet fuels from renewable sources. A major hurdle for their is cost-intensive assessment effects on combustion performance, which relies fuel-dependent processes such as atomization, vaporization and chemical reaction. present work describes results a newly designed experiment that provides accurate measurements free-falling droplets realistic size (D ? 80 µm) in vertical laminar flow with temperatures typical technical combustors. Measurements are performed set systematically chosen conventional multi-component detailed compositions available, three single species. show differences can be accurately resolved related to physical properties. In particular, it found effect boiling point largest ambient gas T? below 1000 K, whereas higher influence heat dominant. well-defined boundary conditions further enable numerical simulation droplet vaporization, where latter uses model based continuous thermodynamic representation Comparisons predicts temporal evolution diameters vaporization.