Fig. 8
From: Estimating WUI exposure probability to a nearby wildfire
In this demo, we assume fire would spread toward a WUI from the north end of the funnel and a WUI is located at the south end of the funnel. a The sequence of cells being added into the funnel. Panel a also shows a case that fire from the wider end of the funnel edge can spread to the WUI without encountering any fireline. b A case with firelines built in the funnel. The “leak ratio” after considering the effect of fireline is about 4÷9 = ~0.44 in Panel b.