TY  - JOUR
PY  - 1999//
TI  - Explosions in buildings: modeling and interpretation of real accidents
JO  - Fire safety journal
A1  - Molkov, VV
SP  - 45
EP  - 56
VL  - 33
IS  - 1
N2  - Real explosions in domestic structures (Rasbash and Stretch, Struct. Eng 1969;47;403-11) and industrial plants (Howard, Loss Prevention 1972;6;68-73) have been analyzed. Deflagration dynamics are solved for enclosures of volumes of 130-8000 m3 for vent release overpressures in the range of 0-0.21 bar, and for different inertia of covers over the venting spaces in the range 0-15 kg/m2. From comparisons of the real explosion data with the modeling of pressure-time behavior during vented gaseous deflagrations according to an earlier lumped parameter theory values of the main parameter, a turbulence factor, [chi], are obtained. The results suggest the combustion is highly turbulent for real conditions in domestic structures (turbulence factor [chi][ges]8 with discharge coefficient [mu]=0.6) and especially in large-scale enclosures such as a plant, with internal obstacles (turbulence factor [chi][ges]17). On the basis of the devised effective turbulence factors (the ratio [chi]/[mu]) the design procedures for avoiding the development of excessive overpressures during deflagrations, in both domestic and industrial plant, can be improved.<p />
LA  - 
SN  - 0379-7112
UR  - http://dx.doi.org/
ID  - ref1
ER  -