Estimation of calculated combustion parameters required for modeling of passenger car fires in the FDS software environment
DOI:
https://doi.org/10.33408/2519-237X.2023.7-4.401Keywords:
fire resistance, parking garage, slab, passenger car, computer modeling, heat release capacity, combustion parameters, FDSAbstract
Purpose. On the basis of the analysis of real passenger car fires, full-scale experiments to determine the main design parameters of combustion for modeling passenger car fires and theoretical estimation of heat fluxes and slab temperatures at fire.
Methods. Comparison of parameters of real passenger car fires with full-scale experiments. Formulation of estimated combustion parameters for modeling in the FDS software environment.
Findings. Field experiments with the use of real passenger cars have shown: at fires of several passenger cars the flame spreading to the neighboring car takes place in 8–10 minutes from the moment of fire occurrence; the maximum power of heat release reaches 10.8 MW, and the time of reaching this power can vary from 8 (at fire of one car) to 25 minutes (at simultaneous fire of two cars). The average value of the heat of combustion of a car is 15 MJ/kg, and temperatures in such fires reach up to 1100 °C.
Application field of research. The obtained results can be used in modeling fires of passenger cars and assessing the impact on building structures, which will improve the level of fire safety of parking garages.
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