Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
Flames stabilization mechanism and the structure to enhance the stability of lean premixed methane-air flames were investigated using a coaxial dual nozzle burner. A lean premixed diffusion combined flames is created by forming a lean premixed flame in the inner main burner and a diffusion flame in the outer annular burner. The combined flame significantly improves the blow-off limit compared with the single lean premixed flame. The combined flame can be classified into three distinct shapes by organizing the flame length by the equivalence ratio. In any of these regions, the key to flame stabilization lies at the base of the combined flame where the diffusion and lean premixed flame connect.
