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

Francisco E. Hernández-Pérez*, Clinton P.T. Groth, Ömer L. Gülder

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 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
Externally publishedYes

Bibliographical note

Funding Information:
Financial support for the research described herein was provided by the MITACS (Mathematics of Information Technology and Complex Systems) Network , part of the Networks of Centres of Excellence (NCE) program funded by the Canadian Government . This funding is gratefully acknowledged with many thanks. The first author gratefully acknowledges the financial support from the Mexican National Council for Science and Technology (CONACyT) . The authors are also grateful to Dr. Fabien Halter for providing the experimental data used in the comparisons with the predicted LES solutions. Computational resources for performing all of the calculations reported herein were provided by the SciNet High Performance Computing Consortium at the University of Toronto and Compute/Calcul Canada through funding from the Canada Foundation for Innovation (CFI) and the Province of Ontario, Canada .

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

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