TY - JOUR
TI - Fire extinction of forest fuels by droplets and water film
AU - Volkov Roman S
AU - Vysokomornaya Olga V
AU - Strizhak Pavel A
JN - Thermal Science
PY - 2018
VL - 22
IS - 1
SP - 347
EP - 358
PT - Article
AB - Paper presents the experimental results about fire extinction in the model  fire sites of forest combustible materials. We use the high-speed video  recording tools during the experiments, as well as the system of multiphase  media diagnostics based on panoramic optical flow visualization techniques.  The presented experiments prove that it is possible to extinguish the forest  combustible material (FCM) by small amount of water. The study considers  several ways to stop FCM thermal decomposition: by individual large water  droplets (1-3 mm), by an aerosol flow (the droplet size is from 0.05 mm to  0.12 mm), or through water film formation on the FCM surface. Typical  durations of the FCM thermal decomposition and time of fire suppression are  determined for various conditions of interaction with water. The experimental  results identify which amount of water is enough to extinguish the FCM by  different ways of water transfer to the reacting surface layer. Furthermore,  it is estimated how the component composition and the properties of the  tested FCM mixtures effects onto the characteristics of the investigated  processes. The residual fraction of the FCM was evaluated by comparison of  initial and final (after extinguishing) mass of the sample.