Effect of low-temperature reactivity on the turbulent combustion of n-octane/iso-octane mixtures in a reactor-assisted turbulent slot burner

Christopher B. Reuter, Omar R. Yehia, Sang Hee Won, Yiguang Ju

Research output: Contribution to conferencePaperpeer-review

Abstract

Common liquid transportation fuels are composed of many different types of large hydrocarbons, some of which are quite reactive at low temperatures. It has been shown previously that the low-temperature chemistry of certain reactive fuels can influence the turbulent flame structure when pre-flame fuel oxidation occurs. This study seeks to answer how blends of fuels with different reactivities, analogous to a real fuel, experience this low-temperature ignition turbulent regime. A reactor-assisted turbulent slot burner with the capacity for elevated burner exit temperatures is used to investigate the turbulent premixed flames of n-octane/iso-octane blends. The experimental results reveal that the blends with significant amounts of n-octane experience pre-flame low-temperature fuel oxidation at elevated burner exit temperatures, which leads to noticeable effects on the flame structure and the turbulent burning velocity. This regime change is not seen for the blends composed primarily of iso-octane, which confirms the role of low-temperature reactivity in modifying the turbulent flame.

Original languageEnglish (US)
StatePublished - 2017
Event10th U.S. National Combustion Meeting - College Park, United States
Duration: Apr 23 2017Apr 26 2017

Other

Other10th U.S. National Combustion Meeting
CountryUnited States
CityCollege Park
Period4/23/174/26/17

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

Keywords

  • Low-temperature chemistry
  • N-octane
  • Turbulent burning velocity
  • Two-stage ignition

Fingerprint Dive into the research topics of 'Effect of low-temperature reactivity on the turbulent combustion of n-octane/iso-octane mixtures in a reactor-assisted turbulent slot burner'. Together they form a unique fingerprint.

Cite this