Thermal radiation model for the buoyancy-controlled diffusion plumes from rectangular fire sources

This study investigated the thermal radiation from a rectangular fire source with different aspect ratios. Fire experiments with burners of the same surface area but different aspect ratios were conducted. The flame was split into several sub-flames as the aspect ratio of burner increased. Compared with the axis-symmetric fire source, the flame split in the rectangular fire source led to a change in the thermal radiation mechanism. Thus, a...