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AbstractSprinklersarethemostreliablemethodavailableforcontrollingbuildingfires.Duetot...
Abstract
Sprinklers are the most reliable method available for controlling building fires. Due to the cooling effect by water spray and drag force produced by the water droplets, sprinkler spray can lead to the loss of stability of the stratified smoke layer. In this paper, the cooling effect of water spray is studied. The smoke layer stability and the mass flow rate are also studied. The Fire Dynamics Simulator (FDS) code, based on the concept of large eddy simulation, is adopted in the present simulation. It has been found that the temperature decrease was almost linear to the working pressure of the sprinkler system. The dimensionless pressure to the smoke penetration depth can be expressed as power function. The spray has great effect on the smoke movement inside the compartment. 展开
Sprinklers are the most reliable method available for controlling building fires. Due to the cooling effect by water spray and drag force produced by the water droplets, sprinkler spray can lead to the loss of stability of the stratified smoke layer. In this paper, the cooling effect of water spray is studied. The smoke layer stability and the mass flow rate are also studied. The Fire Dynamics Simulator (FDS) code, based on the concept of large eddy simulation, is adopted in the present simulation. It has been found that the temperature decrease was almost linear to the working pressure of the sprinkler system. The dimensionless pressure to the smoke penetration depth can be expressed as power function. The spray has great effect on the smoke movement inside the compartment. 展开
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