CLASSROOM FIRE MODELING BY USING BlenderFDS
Abstract
The article considers the comparison of the combustion heat and other fire hazards calculation methods. Made comparative analysis across the methodologies described in Ukrainian state building code 8828:2019 “Fire safety. General regulations”. Conducted the field experiment on evacuations of students from classroom. The experimental results were compared with the theoretical calculations. Proved the advantages of using the open freeware software for calculating fire hazards and 3D-modeling of buildings. Represented the results of usage of data visualization tools.
The enacting of Ukrainian state building code 8828:2019 expanded the number of formally recognized methodologies of calculation of evacuation time in case of fire and the time of escape routes lockup. Due to this building code experts have got a possibility to consider the specific characteristics of buildings and the features of different groups of people that are in these buildings.
By using field model for numerical simulation, we can analyze if building has any weaknesses, forecast the spreading of fire and reconstruct the scene of the fire to determine the causes of this fire.
The field model also applies for effective calculation of buildings fire resistance level. This allows to determine the real temperature during the fire and its influence on construction elements depending on exact fire load. This model is more effective and more accurate in comparison with standard fire regime model.
The BlenderFDS application allows to create 3D models and convert them to format, supported by Fire Dynamic Simulator. It preferable to use for scientific researches in educational institutions as it is freeware and cross platform application.
In addition to using freeware software for calculations, we developed custom application for result data visualization. This application expends the functions of SmokyView in case of building featured line charts.
The results of all numerical calculations of evacuation time were compared with the results of field experiment.
The combined usage of numerical calculations and field experiments is a future perspective in our researches of fire safety of buildings.
