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Laminar flame speeds and extinction limits of conventional and alternative jet fuels

  • Kamal Kumar*
  • , Chih Jen Sung
  • , Xin Hui
  • *Corresponding author for this work
  • Case Western Reserve University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Atmospheric pressure laminar flame speeds are measured using a counterflow twinflame configuration for Jet-A/O2/N2 and S-8/O 2/N2 mixtures at preheat temperatures of 400 and 470 K and equivalence ratios ranging from 0.8 to 1.4. The flow field is recorded using Digital Particle Image Velocimetry. Linear extrapolation is used to determine the unstretched laminar flame speed. Experimental data for the extinction stretch rates of the nitrogen diluted jet fuel/oxidizer mixtures as a function of equivalence ratio are also obtained. In addition, the experimental results for laminar flame speeds and extinction stretch rates for the conventional (Jet-A) and alternative (S-8) jet fuels are compared to the results from our earlier studies for neat hydrocarbon surrogate components, namely ndecane and n-dodecane. Furthermore, the experimental data of Jet-A are compared to the computed values using a chemical kinetic mechanism for a kerosene surrogate. A sensitivity analysis is also performed to identify the most sensitive reactions to laminar flame speed and extinction stretch rate.

Original languageEnglish
Title of host publication47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
StatePublished - 2009
Externally publishedYes
Event47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States
Duration: 5 Jan 20098 Jan 2009

Publication series

Name47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition

Conference

Conference47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
Country/TerritoryUnited States
CityOrlando, FL
Period5/01/098/01/09

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