WF24134Experimental study on the evolution of canyon fire spread behavior under different terrains and the critical conditions for eruptive fire

A systematic experimental study on canyon fire was carried out. Four different types of fire line contour were identified under different topographic conditions. The critical conditions (α = 27.5°, δ = 20°) for eruptive fire occurrence in canyons were identified. A significant increase in convective heating is the basic mechanism of eruptive fire.
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