Asymptotic Extreme Travel Distances of a Firebrand or a Sprinkler Droplet in a Fire Plume

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doi:10.3850/978-981-08-7724-8_06-05

Asymptotic Extreme Travel Distances of a Firebrand or a Sprinkler Droplet in a Fire Plume

M.A. Delichatsios

The Institute for Fire Safety Engineering Research and Technology (FireSERT), University of Ulster, Newtownabbey, BT37 0QB, Northern Ireland.

m.delichatsios@ulster.ac.uk

ABSTRACT

An asymptotic analysis is employed to estimate the travel distances of a firebrand and a droplet through the centerline of a plume. The results for the firebrand lofting and horizontal propagation owing to wind are compared with previous numerical solutions. Agreement is good, except for the maximum distance traveled horizontally. The results from the motion of the droplets towards the fuel surface provide insights for the effectiveness of sprinklers in high ceiling areas.

Keywords: Fire plumes, Firebrand propagation, Sprinkler droplet penetration.

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