A Volatile Organic Compounds Flammability
Approach For Accelerating Forest Fires
Author(s)
L. Courty, K. Chetehouna, J. P. Garo & D. X. Viegas
Abstract
In this paper the accelerating forest fire phenomenon for three real accidents is
investigated. This phenomenon is studied using the hypothesis of the ignition of
a Volatile Organic Compounds (VOCs) cloud accumulated in canyons. By
heating a Rosmarinus officinalis plant in a specific hermetic enclosure, fourteen
VOCs are identified and quantified as temperature functions. The theoretical
flammability limits of those components are calculated by means of empirical
correlations. Froude scaling law is applied to present laboratory results to find
the concentrations of VOCs at canyon scale. The comparison of the flammability
limits with the obtained concentrations shows that the emitted VOCs can lead to
an accelerating forest fire.
Keywords: Rosmarinus officinalis, VOCs emission, flammability domain, Froude
scaling law, accelerating forest fire.
1 Introduction
Forest fires cause important damages in terms of ecological and economical
issues and human lives every year. Some fires with normal behavior suddenly
start to propagate at unusual and very fast speed. They are called eruptive fires
by Viegas [1], fires flashover according to Dold et al. [2] or accelerating forest
fires by Chetehouna et al. [3]. The term eruptive refers to the continuous rise of
the fire rate of spread and flashover to its unexpected character.
There have been many accidents over the last half century where eruptive
fires were reported [4–8]. In France, sixteen firefighters were killed during the
Keywords
Rosmarinus officinalis, VOCs emission, flammability domain, Froude
scaling law, accelerating forest fire
Related Book
Other papers in this volume
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