Title

Ignition Of Lean Methane-Based Fuel Blends At Gas Turbine Pressures

Keywords

Chemical kinetics; Fuel blends; High pressure; Ignition; Methane; Shock tube

Abstract

Shock-tube experiments and chemical kinetics modeling were performed to further understand the ignition and oxidation kinetics of lean methane-based fuel blends at gas turbine pressures. Ignition delay times were obtained behind reflected shock waves for fuel mixtures consisting of CH4, CH 4/H2, CH4/C2H6, and CH4/C3H8 in ratios ranging from 90/10 to 60/40%. Lean fuel/air equivalence ratios (φ = 0.5) were utilized, and the test pressures ranged from 0.54 to 25.3 atm. A methane-oxidation kinetics mechanism based on GRI-Mech 3.0 was assembled to reproduce the methane/air mixtures. Additional reactions involving CH3O and CH 3O2 chemistry and modifications to a few of the pressure-dependent reaction rate coefficients were needed to achieve good agreement between data and model. Copyright © 2005 by ASME.

Publication Date

11-23-2005

Publication Title

Proceedings of the ASME Turbo Expo

Volume

2

Number of Pages

367-379

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1115/GT2005-68517

Socpus ID

27744550850 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/27744550850

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