External Heat Source Assisted Smoldering and Transition Combustion

ABSTRACT Experimental setup was upraised and inferences of external heat source orientation on smoldering is explored on both modes. Physical insight into heterogeneous heat transfer phenomena of smoldering combustion over thin solid fuels is assessed. The study primarily aims at understanding the implications of an external heat source on smoldering combustion in the aid of regression rates. Incense sticks were used as potential fuel as well as external heat source. The presence of an external heat source intensifies the heat transfer drastically when oriented parallel to pilot fuel in reverse and forward mode. Results indicates deviation of heat transfer significantly with varying surface orientation and external heat source distance from the pilot fuel reflected in regression rates. Transition from flaming to smoldering combustion is aggravated intensely with the presence of an external heat source.