Publication Type : Journal Article
Publisher : Elsevier BV
Source : Journal of the Taiwan Institute of Chemical Engineers
Url : https://doi.org/10.1016/j.jtice.2025.106219
Keywords : Micro-combustion, Stability limit, Methane, Micro-mixing, Partially premixed, Lift-off
Campus : Coimbatore
School : School of Engineering
Department : Mechanical Engineering
Year : 2025
Abstract : Micro-mixing is an innovative technique adopted in large-scale combustion to enhance flame stabilization. Flame stability enhancement is achieved as the flame structure is transformed from diffusion to partially premixed type. The present work is the first attempt to introduce micro-mixing in micro-scale combustion. A slot (micro-mixing slot) is provided in the centrally slotted bluff body to enable a small quantity of air gets mixed with fuel which subsequently enhances the flame stabilization in a micro-combustor. The angle of the micro-mixing slot is optimized by considering varied inlet velocity and equivalence ratio range. Moreover, the local mixing characteristics, variation in flame dynamics at different inlet conditions and lift-off dynamics were investigated in the present study. The analysis was conducted numerically by adopting steady state and transient (higher velocity and lift-off conditions) laminar simulations at different inlet velocities and equivalence ratios.
Cite this Research Publication : Sreejith Sudarsanan, Akram Mohammad, Prabhu Selvaraj, Khalid A. Juhany, Radi A. Alsulami, Sudarshan Kumar, Ratna Kishore Velamati, Stability analysis of partially premixed methane-air flames in a novel micro-mixing micro-combustor, Journal of the Taiwan Institute of Chemical Engineers, Elsevier BV, 2025, https://doi.org/10.1016/j.jtice.2025.106219