An investigation on fuel similarity of turbulent flames for C4-C8 n-alkanes

Fujia Wu, Abhishek Saha, Swetaprovo Chaudhuri, Chung King Law

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study we experimentally investigated the propagation speed of constant-pressure expanding flames in near-isotropic turbulence using a dual-chamber, fan-stirred vessel. The motivation of the work is to test whether the concept of fuel similarity for C4-C8 n-alkanes on laminar flames also holds for turbulent flames. Previously it was found that the laminar flame speed, laminar flame thickness and Markstein length are almost identical for these fuels. If this fuel similarity concept can also be shown for turbulent flames, it will suggest a canonical flame structure for large hydrocarbon fuels of the same chemical family, i.e., large fuels always decompose to small C0-C4 fuel fragments before being oxidized, and would significantly simplify/generalize the description of such flames. Our preliminary results show that in the flamelet and thin-reaction zone, the turbulent flame speeds of these fuels indeed assume similar values at various pressures, equivalence ratios and turbulence intensities, thereby extending the concept of their fuel similarity to turbulent flame propagation, within the present parametric range of investigation.

Original languageEnglish (US)
Title of host publicationFall Technical Meeting of the Eastern States Section of the Combustion Institute 2013
PublisherCombustion Institute
Pages27-32
Number of pages6
ISBN (Electronic)9781629937199
StatePublished - 2013
EventFall Technical Meeting of the Eastern States Section of the Combustion Institute 2013 - Clemson, United States
Duration: Oct 13 2013Oct 16 2013

Publication series

NameFall Technical Meeting of the Eastern States Section of the Combustion Institute 2013

Other

OtherFall Technical Meeting of the Eastern States Section of the Combustion Institute 2013
CountryUnited States
CityClemson
Period10/13/1310/16/13

All Science Journal Classification (ASJC) codes

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

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