The characteristics of laminar premixed CH4/CO/air opposed-jet flames are experimentally and numerically investigated. The premixed flames are operated at a fixed stoichiometric condition with various fuel
mixtures of CH4 and CO. The flame structures are calculated using the
SPIN code coupled with multi-component transport model and GRI-Mech
3.0 chemical kinetic mechanisms, while the PREMIX code is employed to
investigate the laminar burning velocity. Results show that the measured
and calculated flame front positions are in excellent agreement. The
calculated flame structures suggest that the premixed CH4/CO/air flames
can be categorized into CH4-like or CO-like flames, according to the spatial distribution of CO concentration. In addition, the calculated maximum laminar burning velocity of the premixed CH4/CO/air flames is found when the volumetric CH4 concentration is about 10-20% in fuel mixtures.