The effects of water addition on pollutant formation from lpp gas turbine combustors

B. de Jager, Jacobus B.W. Kok, G. Skevis

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

18 Citations (Scopus)

Abstract

Lean premixed prevapourised (LPP) combustion of liquid fuels with steam dilution and under high pressure conditions is numerically assessed. A detailed chemical kinetic mechanism for n-heptane and iso-octane combustion is assembled on the basis of existing detailed mechanisms and validated against experimental data from laminar premixed flames. A computational singular perturbation (CSP) method is then used to analyse and reduce the mechanism to one global step. This reduced mechanism forms the basis for the reaction progress variable (RPV) approach from the CFI combustion model. The obtained one-step combustion mechanism is validated by comparing the CFI model results, stored in a thermochemical database as a function of the RPV, with detailed laminar flame solutions in reaction progress variable space. The single step global mechanism is then used to assess, under LPP gas turbine operating conditions, the influence of dilution and fuel equivalence ratio on iso-octane and n-heptane combustion. The above formulation is shown to accurately capture NO and CO emission trends.
Original languageUndefined
Title of host publicationProceedings 31st Int. Symp. on Combustion
EditorsP. Dagaut, V. Sick
Place of PublicationHeidelberg
PublisherElsevier
Pages3123-3130
Number of pages7
DOIs
Publication statusPublished - 6 Aug 2006
Event31st Int. Symp. on Combustion: Proceedings 31st Int. Symp. on Combustion - Heidelberg
Duration: 6 Aug 200611 Aug 2006

Publication series

Name
PublisherElsevier
Number2
Volume31
ISSN (Print)1540-7489

Conference

Conference31st Int. Symp. on Combustion
CityHeidelberg
Period6/08/0611/08/06

Keywords

  • METIS-235801
  • Detailed kinetics
  • LPP combustion
  • Emissions
  • Single-step reduction
  • Flame Modelling
  • IR-78800

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