Laminar Burning Velocity Measurements at Elevated Pressure and Temperatures and the Challenges in Kinetic Scheme Optimization

Reliable data on fundamental combustion parameters are essential to validate kinetic schemes under a wide range of experimental conditions. Laminar burning velocity is one such fundamental intrinsic property of a flammable mixture. The challenges in determining the effect of simultaneous change in temperature and pressure on the burning velocity of low-calorific value syngas–air mixtures are presented. Comparing the present experiments with available kinetic schemes at elevated temperature and pressure reveals poor prediction capabilities. The major contributing factor to this discrepancy is the high sensitivity of key reactions at high temperatures and pressure conditions. The challenges of direct use of the experimental data to optimize kinetic schemes for the syngas–air mixtures are discussed.