Turbulent Consumption Speeds of High Hydrogen Content Fuels From 1-20 atm

This work describes measurements and analysis of the turbulent consumption speeds, S-T,S-GC, of H-2/CO fuel blends. We report measurements of S-T,S-GC at pressures and normalized turbulence intensities, u(rms)'/S-L,S-0, up to 20 atm and 1800, respectively, for a variety of H-2/CO mixtures and equivalence ratios. In addition, we present correlations of these data using laminar burning velocities of highly stretched flames, S-L,S-max, derived from quasi-steady leading points models. These analyses show that S-L,S-max can be used to correlate data over a broad range of fuel compositions but do not capture the pressure sensitivity of S-T,S-GC. We suggest that these pressure effects are more fundamentally a manifestation of non-quasi-steady behavior in the mass burning rate at the flame leading points.