Fire Safety Science Digital Archive

Small scale extinction experiments and a theoretical analysis on the critical water application rate were performed using a wood crib fire and a water stream. Water was manually applied from the top layer to the lower layer or in reverse, and also with top layer variations of the initial degree of combustion to eluciate the effects of heat input to the wet surface. On the supposition that the extinction of the whole body follows fluctuation between local extinction and reignition, a dynamic equation was composed. The experimental results seemed to be in reasonable agreement.