MODIFIED ZONAL MODEL FOR CALCULATING
THE THERMODYNAMICS OF THE GAS IN A FIRE
WITHIN AN ATRIUM

S. V. Puzach and E. S. Abakumov

UDC 536.25:614.841

A modified zonal model for calculating the thermodynamics 
of the gas in a fire has been developed. An equation for determining 
the flow rates of the gas-mixture and smoke at cross sections of a 
convective column is proposed. The results of numerical calculations 
of the parameters of the heat and mass transfer in a fire within an 
atrium with the use of the modified zonal model as well as zonal and 
field models are presented and discussed. Specifics of the use of 
zonal models for estimating the fire hazard in an atrium are considered.

Academy of State Fire-Prevention Service, Ministry of 
Extraordinary Situations of Russia, 4 B. Golushkin Str., Moscow, 129366, 
Russia; email: puzachsv@rambler.ru. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 80, No. 2, pp. 84-89, March-April, 2007. Original 
article submitted July 7, 2006.