中庭烟气填充高度模拟研究

利用FDS模拟中庭内的烟气填充过程,分析环境温度、顶棚温度、火源功率、中庭体量对烟气填充高度的影响。通过分析温度数据和烟气层高度数据,得到烟气层高度与各因素之间相互影响的定性关系,并通过曲线拟合得到烟气层高度与各因素之间的定量关系。结果表明,烟气层填充高度基本不受起始环境温度的影响,烟气层高度峰值与顶棚温度、火源功率、中庭体量之间存在线性关系。

Atrium smoke filling height simulation

Simulate the smoke filling process in atrium by FDS,and the influence of environment temperature,temperature near the ceiling,fire source power,and atrium volume to smoke filling height were analyzed.By analyzing the temperature and smoke filling height data,the qualitative relationship between smoke layer height and each factor were gotten,and the quantitative relationship was gotten by curve fitting.Results showed that,the environment temperature has little influence on the smoke layer height,and smoke layer height peak is linearly related with temperature on the ceiling,fire source power and atrium volume.