1D Raman/Rayleigh/CO-LIF line measurements of major and temperature in turbulent DME/air jet flame

Frederik Fuest, Robert S. Barlow, Gaetano Magnotti, Jeffrey A. Sutton

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

Abstract

Dimethyl ether (DME) is considered a promising alternative to diesel fuel in compression-ignition engines because of low particulate and NOx emissions along with high thermal efficiencies as well as improved auto-ignition characteristics due to its high cetane number. Recently, DME also has been selected as a prospective fuel candidate for the validation of turbulent combustion models organized within the TNF Workshop, where recent focus has shifted to fuels with increasing complexity as compared to hydrogen and methane. In this work we present experimental results of seven major species mole fractions (CO2, O2, CO, N2, DME, H2O, H2) and temperature determined from Raman/Rayleigh/CO-LIF line measurements in a series of piloted, partially-premixed DME/air turbulent jet flames with 0.2 DME mole fraction in the jet. Results are presented for Flame D, the lowest jet exit Reynolds number case of the series. Mean and RMS radial profiles were derived from the instantaneous measurements at various axial positions downstream of the nozzle exit of the Sydney/Sandia piloted jet burner. Insights into the turbulent flame structure are examined by conditioning the data on the mixture fraction and comparing the turbulent flame results to one-dimensional laminar flame calculations at varying strain rates.

Original languageEnglish (US)
Title of host publication8th US National Combustion Meeting 2013
PublisherWestern States Section/Combustion Institute
Pages2394-2409
Number of pages16
Volume3
ISBN (Electronic)9781627488426
StatePublished - 2013
Externally publishedYes
Event8th US National Combustion Meeting 2013 - Park City, United States
Duration: May 19 2013May 22 2013

Other

Other8th US National Combustion Meeting 2013
CountryUnited States
CityPark City
Period05/19/1305/22/13

ASJC Scopus subject areas

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

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