Evaluation of Fingering Patterns formed on a Burning Thin Paper

Flame spread over a thin paper-disk in concurrent oxidizer flow within narrow channel was observed. The oxidizer flow rate and channel height were varied from 0.02 to 2 L/min and 2 to 16 mm, respectively. After the ignition, the flame initially spreads in radial direction, then it separates into multiple flamelets like conventional fingering pattern formation. The conditions where the fingering pattern formation occurs were identified based on...