Investigating the Ignition and Stability Limits of Premixed Methane/Air Combustion in Micro-Channels

Understanding and improving the performance of miniature devices powered by micro-combustion have been focus continued attention researchers recently. The goal present work is to investigate behavior premixed methane–air combustion in a quartz microreactor with an externally controlled wall temperature. Specifically, impacts flow inlet velocity, equivalence ratio, channel size are examined. This study conducted means computational simulations, results validated against prior experimental data, as well other similar studies literature. Utilizing simulation detailed chemistry, provides more in-depth insight into variety phenomena, such ignition, flame propagation, flames repetitive extinctions ignitions (FREI), stabilization. In particular, span, FREI-related characteristics scrutinized understand underlying physics stability/instability modes. It shown that appear stable at higher velocities, while FREI mode detected lower depending on ratio size. findings also explain how different operating conditions impact both stability