Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 52 9 2019 04 09 Maps of Flame Dynamics for Premixed Lean Hydrogen-Air Combustion in a Heated Microchannel Maps of Flame Dynamics for Premixed Lean Hydrogen-Air Combustion in a Heated Microchannel 2443 2464 3366 10.22060/mej.2019.14957.5997 FA Alireza Alipoor Shahid Chamran University of Ahvaz Kiumars Mazaheri Faculty of Mechanical Engineering, Tarbiat Modares University Journal Article 2018 09 20 In the present work, flame dynamics are extracted for combustion of premixed lean hydrogen-air in a heated microchannel using numerical simulation. In order to simulate the combustion phenomenon at this scale, Navier-Stokes equations along with energy and species conservation equations are considered by formulation of low Mach number and with consideration of detail chemical kinetics. Regarding different conditions, three dynamics is observed in the micro channel including periodic repetitive ignition-extinction, steady symmetric flame and steady asymmetric flame. Effects of different parameters such as inlet velocity, equivalence ratio, and channel width are investigated on the flame dynamics. . In the present work, flame dynamics are extracted for combustion of premixed lean hydrogen-air in a heated microchannel using numerical simulation. In order to simulate the combustion phenomenon at this scale, Navier-Stokes equations along with energy and species conservation equations are considered by formulation of low Mach number and with consideration of detail chemical kinetics. Regarding different conditions, three dynamics is observed in the micro channel including periodic repetitive ignition-extinction, steady symmetric flame and steady asymmetric flame. Effects of different parameters such as inlet velocity, equivalence ratio, and channel width are investigated on the flame dynamics. . https://mej.aut.ac.ir/article_3366_07f75d9144912970de5a09f5a305e10c.pdf