SOME FEATURES OF THE HEAT AND MASS
TRANSFER IN A FIRE WITHIN AN ATRIUM

S. V. Puzacha and V. G. Puzachb

UDC 614.841.4

A field method of calculating the heat and mass transfer 
in a fire within an atrium is proposed. Results of numerical simulation 
of the three-dimensional temperature, velocity, smoke optical-density, 
and visibility fields in the gas medium in a fire within an atrium 
with the use of the mathematical model developed are presented. It 
is shown that the mechanisms of heat and mass transfer determined 
by the method proposed substantially change the modern views on the 
dynamics of the dangerous factors of a fire within an atrium and that 
the pattern of thermodynamics of the gas in a fire obtained with the 
indicated model cannot be obtained with integral and zonal models.

aAcademy of State Fire-Prevention 
Service, Ministry of Extraordinary Situations, 4 Boris Galushkin Str., 
Moscow, 129366, Russia; email: puzachsv@rambler.ru; bInstitute 
of High Temperatures, Russian Academy of Sciences, 
Moscow, Russia. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 
79, No. 5, pp. 135-146, September-October, 2006. Original 
article submitted March 1, 2005.