| Popis: |
Embers, also known as firebrands, are the leading cause of building ignition during wildland-urban fires. This is attributed to direct ignitions, materials on, in, or attached to the building, and indirect ignition when they ignite vegetation or combustible material near the building which can result in direct flame contact and radiant heat that ignites the building. Where and when embers accumulate near a building and ignitable fuel is present the potential for indirect ember ignition of the building exists. Factors that influence ember accumulation near a building include building geometry, such as flat wall and re-entrant corner, building wind angle, and wind speed. Experiments conducted at the IBHS Research Center will full-scale homes with the above-mentioned factors provide quantification of ember accumulation, in terms of mass per unit area. |
