Large eddy simulation of radiation effects on pollutant emissions in diluted turbulent premixed flames

A. Cody Nunno, Temistocle Grenga, Michael Edward Mueller

Research output: Contribution to conferencePaper

Abstract

Radiation effects are examined in turbulent premixed flames using a detailed Large Eddy Simulation (LES) approach. The approach combines a tabulated premixed flamelet model (Flamelet Generated Manifolds) with an optically thin radiation model. Radiation heat loss is tracked using a heat loss parameter in the tabulation. Heat loss in the flamelets is calculated by varying a coefficient on the radiation source term, ranging from zero (adiabatic) to unity (full optically thin model). NOx is also modeled using a transport equation, which accounts for both chemical generation and loss. The model is compared against experimental measurements of methane-air piloted turbulent premixed planar jet flames with increasing levels of water and carbon dioxide dilution but which maintains a constant adiabatic flame temperature. The effects of dilution on global flame structure and NO emissions resulting directly and indirectly from radiation are examined in detail.

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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    Nunno, A. C., Grenga, T., & Mueller, M. E. (2016). Large eddy simulation of radiation effects on pollutant emissions in diluted turbulent premixed flames. Paper presented at 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016, Princeton, United States.