Abstract
The fire suppression effectiveness of water mist for different development stages of fire is obviously different. In order to study the suppression effectiveness of water mist on the post-flashover compartment fire, the interaction process of water mist and post-flashover fire was simulated by using FDS, the effect of water mist characteristics on fire suppression was analyzed, and the suppression mechanism of water mist for the post-flashover fire was proposed. The results show that the post-flashover compartment fire can be effectively suppressed when the minimum spray intensity of high pressure water mist system specified in GB 50898 standard increases to 2.22 L/min.m2; The suppression effectiveness of medium pressure water mist on post-flashover compartment fire is inferior to that of high pressure water mist; cooling effect on the flame and oxygen displacement are the primary suppression mechanisms of water mist for post-flashover compartment fire.
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