Flame spread over aviation kerosene with an obstacle in liquid phase

The phenomena of flame spread over aviation kerosene with an obstacle in liquid phase are investigated experimentally through surface temperature measurement by using infrared camera, schlieren images of subsurface flow in front of and behind obstacle and residence time of flame obtained from video recording. Experimental results reveal that obstacle has no effect on gas phase controlled flame spread. But for liquid phase controlled flame spread, flame can be stopped by an obstacle with its top edge flush with oil surface, and the residence time decreases with the increase of initial temperature of fuel. That conduction and radiation only play a subsidiary role in flame spread over liquid fuel was proved by schlieren images and surface temperature profiles.