SOME REGULARITIES OF HEAT AND MASS TRANSFER
IN THE CASE OF FIRE WITHIN A BUILDING

S. V. Puzach and V. M. Kazennov

UDC 614.841.4

Results of a numerical investigation of heat and mass 
transfer at the initial stage of fire within a building in combustion 
of kerosene, carried out with the use of a three-dimensional mathematical 
field model, are presented. A comparison of the distribution of the 
averaged temperatures and velocities along the vertical axis of the 
convective column and of the mass rates of gas flows through an open 
opening with the experimental data has been made. Substantial three-dimensional 
inhomogeneities of the velocities and the temperatures in the near-ceiling 
layer have been revealed. It has been established that near the opening 
there is a critical separation zone which influences significantly 
the parameters of natural gas transfer.

Academy of State Fire-Prevention Service, Moscow, Russia; 
email: puzachsv@hotmail.com. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 75, No. 5, 
pp. 130-137, September-October, 2002. Original article submitted 
January 15, 2002; revision submitted April 9, 2002.

JEPTER7492020028
JEPTER749208