采用火灾动力学软件FDS对室内火灾进行数值模拟,主要开展了火场环境下水喷淋灭火效果的研究。定义了灭火效率的概念,通过多次的数值模拟,以喷头灭火效率为标准确定临界布置间距和布置高度。在该布置间距和高度下,喷头灭火效率达到最佳状态,并通过实验数据对结果进行了验证。 Using fire dynamics software FDS to simulate the indoor fire, the research mainly focuses on the fire extinguishing effect of water spray under the fire environment. The concept of fire extinguishing efficiency is defined. Through numerical simulation for many times, the critical arrangement pitch and layout height are determined by the fire extinguishing efficiency of the sprinkler. Under the arrangement pitch and height, the fire extinguishing efficiency of the spray nozzle reaches the best condition, and the result is verified through the experimental data.