Large-eddy simulation of lean hydrogen-methane turbulent premixed flames in the methane-dominated regime

Francisco Hernandez Perez*, Clinton P.T. Groth, Ömer L. Gülder

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The application of large-eddy simulation (LES) to the prediction of H 2-enriched lean methane-air turbulent premixed combustion is considered. A presumed conditional moment (PCM) subfilter-scale combustion model is coupled with the flame prolongation of intrinsic low-dimensional manifold (FPI) chemistry tabulation technique. The LES and PCM-FPI modelling procedures are then applied to the prediction of laboratory-scale axisymmetric Bunsen-type turbulent premixed flames. Both premixed methane-air and H2-enriched methane-air flames are considered and the predicted solutions are examined and compared to available experimental data. The enriched flame has 20% H 2 in terms of mole fraction and lies in the methane-dominated regime of hydrogen-methane mixtures. The LES simulations predict similar qualitative trends to those found in the experiments for flame height and curvature. The addition of H2 decreases the flame height and broadens the curvature probability density functions, which show a Gaussian-type shape centred around zero. Moreover, the enriched flame displays a higher degree of wrinkling with sharper ridges of negative curvature and larger pockets of positive curvature. Overall, the proposed treatment for the PCM-FPI combustion model, in terms of progress variable and tabulated data, seems to perform well for the H 2-enriched methane flame in the methane-dominated regime.

Original languageEnglish (US)
Pages (from-to)7147-7157
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number13
DOIs
StatePublished - Apr 24 2014

Keywords

  • Flame prolongation of intrinsic low-dimensional manifold
  • Hydrogen-methane mixtures
  • Large-eddy simulation
  • Presumed conditional moment
  • Turbulent premixed combustion

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Fingerprint Dive into the research topics of 'Large-eddy simulation of lean hydrogen-methane turbulent premixed flames in the methane-dominated regime'. Together they form a unique fingerprint.

Cite this