Flame holding at the burner is one of the essential parts for high performance combustion. Flame holding and lifting/blowoff at the burner rim and the stabilization mechanism have been researched. The nozzle diameter (curvature) at the upstream end of the diffusion flame adjacent to the burner rim plays important roles for the flame holding. The inverse diffusion flame (IDF) is formed when the fuel and air streams of a normal round co-flowing diffusion flame (NDF) are reversed. The objective of the present study is to get further understanding lifting/blowoff in the inverse diffusion flame (IDF) and present clearer understandings of the processes of the flame holding at the burner rim.
