Predicting the global combustion behaviors of petroleum-derived and alternative jet fuels by simple fuel property measurements

Sang Hee Won, Peter S. Veloo, Stephen Dooley, Jeffrey Santner, Francis M. Haas, Yiguang Ju, Frederick L. Dryer

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

Pre-vaporized global combustion behaviors of a petroleum-derived jet fuel (JP-8), five alternative jet fuels (Shell SPK, Sasol IPK, HRJ Camelina, HRJ Tallow, and Gevo ATJ), and five 50/50 (liquid volume) blends of JP-8/alternative fuels are experimentally examined and compared. Three experiments are performed to investigate the gas-phase combustion behaviors of the tested fuel samples: (1) global oxidative species profiles in a variable pressure flow reactor, (2) diffusion flame extinction in a counterflow burner, and (3) premixed flame initiation in a heated spherical combustion chamber. Multivariate linear regression methods have been applied to investigate the sensitivities of pre-vaporized global combustion behaviors to individual combustion property targets of the fuels, including Derived Cetane Number (DCN), H/C ratio, mean molecular weight, and smoke point. As a proof of concept for fuel screening tool based on the standardized fuel property measurements, a "combustion property target (CPT) index" based upon this regression analysis is found to show promise as a rapid means to evaluate the global pre-vaporized combustion behaviors of the tested fuel samples against each other as well as the spectrum of JP-8 fuels found in use. The present work suggests the applicability of such a methodology not only as an expeditious fuel screening tool for assessing the fully pre-vaporized, kinetically coupled behaviors of emerging alternative jet fuel candidates, but further supports the use of combustion property targets in developing kinetic models that are specific to each real fuel.

Original languageEnglish (US)
Pages (from-to)34-46
Number of pages13
JournalFuel
Volume168
DOIs
StatePublished - Mar 15 2016

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Keywords

  • Alternative jet fuels
  • CPT index
  • Combustion property target
  • Derived Cetane Number (DCN)
  • Smoke point (SP)
  • Threshold Sooting Index (TSI)

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