Journal
PROCEEDINGS OF THE COMBUSTION INSTITUTE
Volume 35, Issue -, Pages 2983-2991Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.proci.2014.05.145
Keywords
Autoignition; Rapid compression machine; Shock tube; JP-8; JP-5
Funding
- Office of Naval Research (Illinois) [N00014-12-1-0107]
- Office of Naval Research for support (Rensselaer) [N00014-11-10839]
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The autoignition characteristics of military aviation fuels (JP-5 and JP-8), proposed camelina-derived hydroprocessed renewable jet fuel replacements (HRJ-8 and HRJ-5), Fischer-Tropsch fuels (Shell and Sasol), three Sasol isoparaffinic solvents, as well as 50/50 volumetric blends of the alternative fuels with the conventional fuels are examined. Experiments were conducted in a rapid compression machine and shock tube at compressed temperatures of 625 K <= T-c <= 1000 K, a compressed pressure of 20 bar, and under stoichiometric and lean conditions. Several implicit properties of the alternative fuels prompted a study of the influence of chemical composition on autoignition, including the influence of isoparaffinic, cycloparaffinic, and aromatic structures. In addition, interesting combustion phenomena at low-temperature conditions are investigated under lean conditions, specifically concerning jet fuel blend reactivity, where a convergence in blend reactivity to the reactivity of either a conventional or alternative fuel is observed. (C) 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
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