FIRE SAFETY MODELLING FOR BUILDINGS (REVIEW)

A study of the thermal effects of firebrands of natural origin on combustible materials is presented. Model samples were used to study the effects of wind speed and firebrand accumulation on the ignition process. A transition to flaming combustion can only be achieved under the influence of a group of firebrands, with a minimum number of particles needed to ignite being 6–10 particles over an area of 50 × 50 mm. An analysis of the heat exchange and ignition modes of a wood sample under the conditions of thermal impact by smoldering particles was performed using mathematical modeling. When assessing the fire resistance of building structures, aerodynamic factors and local thermal impacts need to be considered.