LES of sandia flame D with eulerian PDF and finite-rate chemistry

Fabrizio Bisetti*, J. Y. Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Monte Carlo simulations of joint PDF approaches have been extensively developed in the past largely with Reynolds Averaged Navier Stokes (RANS) equations. Current interests are in the extension of PDF approaches to Large Eddy Simulation (LES). As LES allows to resolve the large scales of turbulence in time and space, a joint LESPDF approach holds the promise to ease the modelling requirements (e.g. mixing models). In the past we have implemented a joint scalar PDF approach into LES with the amelet model using an Eulerian approach. Our preliminary results demonstrated that careful implementation of the Eulerian approach can be fully consistent with the counterpart finite-volume method. In this paper, results of recent LES of a pilot CH 4 /Air ame (Sandia/TUD ame D) with realistic finite-rate chemistry will be reported using three di erent mixing models including modified Curl (MC), Interaction by Exchange with the Mean (IEM), and Eucledian Minimum Spanning Tree (EMST). The calculations were performed with a 12-step reduced chemistry that has been well tested in RANS simulations of Sandia Flame D. In constrast to established RANS results which showed unphysical extinction with selected mixing models, LES results with di erent mixing models all lead to stable combustion and somewhat similar extinction patterns. These results suggest that the requirements of mixing models may be relaxed if large variations in scalar composition are coherently resolved as shown by our implementation of a joint LES-Eulerian PDF approach.

Original languageEnglish (US)
Title of host publicationFall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting
PublisherWestern States Section/Combustion Institute
Pages554-561
Number of pages8
ISBN (Electronic)9781617827921
StatePublished - Jan 1 2005
EventFall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 - Stanford, United States
Duration: Oct 17 2005Oct 18 2005

Publication series

NameFall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting
Volume1

Other

OtherFall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005
CountryUnited States
CityStanford
Period10/17/0510/18/05

Keywords

  • Eulerian PDF methods
  • Large Eddy Simulation
  • Mixing models
  • Turbulent combustion

ASJC Scopus subject areas

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

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