Mode transition of interacting buoyant non-premixed flames

The dynamic behavior, especially in the transition to oscillation mode (in-phase and anti-phase), of two interacting non-premixed methane-air jet flames was investigated experimentally. A well-controllable experimental system for the present purpose was constructed and key parameters; such as fuel flowrate (Q), burner diameter (d), and burner separation distance (L), were varied systematically. A well-known periodic motion of the flame was...