Ignition of Lean Methane-Based Fuel Blends at Gas Turbine Pressures Conference Paper uri icon

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.

author list (cited authors)

  • Petersen, E. L., Hall, J. M., Smith, S. D., de Vries, J., Amadio, A., & Crofton, M. W.

citation count

  • 5

publication date

  • January 2005

publisher