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Introduction of a flame suppression pattern into integrated and zone models used to analyze the dynamics of hazardous factors of indoor fires

https://doi.org/10.22227/PVB.2021.30.02.78-87

Abstract

Introduction. Fire risk calculation is performed to substantiate the compliance of space planning solutions of buildings and structures with fire safety requirements. The calculation of time needed for hazardous factors of fire to block evacuation routes is performed with account for unlimited fire propagation. The only system, whose operation is taken into account if the fire risk value is exceeded, is the smoke ventilation system. The operation of other fire safety systems is disregarded due to the unavailability of reliable engineering methods of analysis of their influence on fire escalation. The problem of development of modified mathematical models, used to analyze the fire escalation pattern, with account to be taken of the process of fire extinguishing and its influence on fire propagation, is relevant. The purpose of this research is to develop common principles that allow to take account of the pattern of fire suppression in solid materials and combustible liquids by fire extinguishing substances having various origins and degrees of dispersion, if the fire extinguishing substances are added to integrated and zone models of development of hazardous factors of fire escalation.
Calculation methodology. The calculations are based on the equation compiled in furtherance of principles of conservation of mass and energy in the flame zone above the surface of the combustible material.
Research results. The co-authors suggest general principles for the introduction of a flame suppression pattern into integrated and zone models used to analyze the evolution of hazardous factors of indoor fires. The coauthors present the main provisions and parameters needed to modify integrated and zone models in case of different methods of fire extinguishing. The co-authors have analyzed hazardous factors of fire with account for the flame suppression pattern.
Conclusions. The co-authors applied the research findings to develop the modified integrated and zone models that allow to analyze the dynamics of hazardous factors of fire with account for the extinguishing of solid materials and combustible fluids by fire extinguishing substances having various origins and degrees of dispersion.

About the Authors

D. A. Korolchenko
Moscow State University of Civil Engineering (National Research University)
Russian Federation

Dmitriy A. Korolchenko, Cand. Sci. (Eng.), Docent, Head of Department of Integrated Safety in Civil Engineering, Head of Institute of Integrated Safety in Construction

ID RISC: 352067

Scopus Author ID: 55946060600

ResearcherID: E-1862-2017 

Yaroslavskoe Shosse, 26, Moscow, 129337



S. V. Puzach
The State Fire Academy of the Ministry of Russian Federation for Civil Defense, Emergencies and Elimination on Consequences of Natural Disasters
Russian Federation

Sergey V. Puzach, Dr. Sci. (Eng.), Professor, Honoured Scientist of the Russian Federation, Head of Thermal Physics and Hydraulic Department

ID RISC: 18265

Scopus Author ID: 7003537835

ResearcherID: U-2907-2019 

Borisa Galushkina St., 4, Moscow, 129366



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Review

For citations:


Korolchenko D.A., Puzach S.V. Introduction of a flame suppression pattern into integrated and zone models used to analyze the dynamics of hazardous factors of indoor fires. Pozharovzryvobezopasnost/Fire and Explosion Safety. 2021;30(2):78-87. (In Russ.) https://doi.org/10.22227/PVB.2021.30.02.78-87

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