SUBSTANTIATION OF THE CORRECTION FACTOR FOR THE INFLUENCE OF WIND SPEED TO ASSESS THE SPREAD OF FIRE TO NEIGHBORING BUILDINGS

Abstract

In the article, the results of a numerical experiment using mathematical models of computational gas-hydro-dynamics reveal the dependence of the time of fire in a neighboring building on wind speed, distance between buildings and fire load, when the building irradiated with a fire torch is located on the windward side. The authors identified the largest and smallest indicators of significant factors. In the course of the study, the authors built a mathematical model that describes the dependence of wind on the time of a fire in a neighboring building. The corresponding constants for the numerical regression equation are determined. To determine the constants of the numerical regression equation, 8 numerical experiments were performed according to the planning matrix of the complete factorial experiment. Due to the constructed regression dependence, a corresponding surface of the dis-tance dependence on the most influential factors was created. Based on the results, an appropriate data table was developed for further calculations of fire effects on neighboring buildings under wind conditions, and by correlat-ing the obtained and existing data, a correction factor for wind speed effects was derived to estimate the spread of fire to a neighboring building.