Maps of Flame Dynamics for Premixed Lean Hydrogen-Air Combustion in a Heated Microchannel

Document Type : Research Article

Authors

1 Shahid Chamran University of Ahvaz

2 Faculty of Mechanical Engineering, Tarbiat Modares University

Abstract

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. .

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References

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Amirkabir Journal of Mechanical Engineering
Volume 52, Issue 9
December 2020
Pages 2443-2464

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