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 conferencePaperpeer-review

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 - 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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