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,GC, of H₂/CO fuel blends. We report measurements of S_T,GC at pressures and normalized turbulence intensities, u′_rms/S_L,0 up to 20 atm and 1800, respectively for a variety of H₂/CO mixtures and equivalence ratios. In addition, we present correlations of these data using laminar burning velocities of highly stretched flames, S_L,max, derived from quasi-steady leading points models. These analyses show that S_L,max can be used to correlate data over a broad range of fuel compositions, but do not capture the pressure sensitivity of S_T,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.