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《Fire Safety Science》 2002-03
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The Analysis and Estimation of the Plume Models in the Development of Fires

CHENG Yuan ping, CHEN Liang, ZHANG Meng jun (China University of Mining and Technology, 221008 Xuzhou, Jiangsu, China)  
This article generalizes several usual types of plume models, such as Zukoski(1)?Zukoski(2)?NFPA?McCaffre and Thomas Hinkley, and their appropriate applicable conditions. Several examples are calculated to contrast and analyze some parameters of the several usual types of plume models,such as plume mass flow, the temperature of hot layer of gas under the conditions of maintaining some certain height of low layer of air,and the volumetric flow of smoke. The results indicate, that as the height of low layer of air is between 2m and 3m, the results of calculation for the different models are closer to each other, and that on the conditions of the relatively larger height of low layer of air and the fire of small surface of fuel, the results of calculation for the three models, Zukoski(1), Zukoski(2), NFPA, are also closer to each other and for the results of McCaffre model, the plume mass flow is biggest, the temperature of hot layer of gas is lowest, and the volumetric flow of smoke is biggest, and on the condition of the fire of big surface, other than small surface, of fuel, for McCaffre model, its plume mass flow is bigger, the temperature of hot layer of gas is lower, and the volumetric flow of smoke is bigger than Thomas Hinkley model. Finally, the results show that as the height of compartments and the area of floors are separately constant, the plume filling time is shortest if the corresponding plume mass flow is relatively bigger.
【Fund】: 国家自然科学基金资助项目 (5 0 174 0 5 2 )
【CateGory Index】: X932
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