Effects of water and CO2 dilution on the burning characteristics of methane/air premixed flames in a reactor-assisted turbulent slot burner

Christopher B. Reuter, Sang Hee Won, Yiguang Ju

Research output: Contribution to conferencePaper

Abstract

In order to better understand the effects of exhaust gas recirculation, the impact of water and CO2 dilution on the turbulent combustion of methane/air mixtures is experimentally investigated in a reactor-assisted turbulent slot (RATS) burner using OH planar laser-induced fluorescence measurements. It is shown that the primary contribution of both of these diluents is a reduction in the flame temperature, which leads to decreases in the turbulent burning velocity, flame surface density, and mean fuel consumption rate. However, when thermal effects are removed by holding the adiabatic flame temperature constant, it is shown that some chemical and transport contributions of these diluents are still present. The size of the turbulent flame brush increases even for fixed-temperature water and, to a lesser extent, CO2 dilution. The turbulent burning velocity is also reduced for the CO2 case, although it is essentially unchanged for the water case. The results of this investigation can be used as a platform for the isolation of turbulence-chemistry-transport interactions in premixed flames.

Original languageEnglish (US)
StatePublished - Jan 1 2016
Event2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016 - Princeton, United States
Duration: Mar 13 2016Mar 16 2016

Other

Other2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016
CountryUnited States
CityPrinceton
Period3/13/163/16/16

All Science Journal Classification (ASJC) codes

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

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    Reuter, C. B., Won, S. H., & Ju, Y. (2016). Effects of water and CO2 dilution on the burning characteristics of methane/air premixed flames in a reactor-assisted turbulent slot burner. Paper presented at 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016, Princeton, United States.