Transported PDF modeling of nonpremixed turbulent syngas flames and 0.8 MW Oxy-Natural gas furnace

X. Y. Zhao, D. C. Haworth, E. D. Huckaby

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

Abstract

A transported composition probability density function (PDF) method is applied to laboratory-scale turbulent CO/H2/N2 ("syngas") flames and a 0.8 MW Oxy-Natural gas furnace. A consistent hybrid Lagrangian particle/Eulerian mesh algorithm is used to solve the modeled PDF transport equation. The model includes standard k-epsilon turbulence, gradient transport for scalars, and EMST mixing. Sensitivities of model results to the treatment of radiation heat transfer, the choice of chemical mechanism, and the PDF mixing model are explored. The model reproduces the measured mean and rms temperature, major species, and minor species profiles reasonably well. Radiation effects are relatively small in the syngas flames, but consideration of radiation is important for accurate NO prediction. The choice of chemical mechanism is also essential for the NO prediction. It is important to account explicitly for turbulence-chemistry interactions, although the details of the mixing model do not make a large difference in the results, within reasonable limits.

Original languageEnglish (US)
Title of host publicationFall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
PublisherCombustion Institute
Pages591-595
Number of pages5
ISBN (Electronic)9781622761258
StatePublished - 2011
EventFall Technical Meeting of the Eastern States Section of the Combustion Institute 2011 - Storrs, United States
Duration: Oct 9 2011Oct 12 2011

Publication series

NameFall Technical Meeting of the Eastern States Section of the Combustion Institute 2011

Other

OtherFall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
CountryUnited States
CityStorrs
Period10/9/1110/12/11

All Science Journal Classification (ASJC) codes

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

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