基于大涡模拟的可熔排烟窗排烟可行性

Feasibility of smoke exhaust with fusible smoke exhaust window based on the large eddy simulation

为了研究可熔排烟窗自然排烟方式的可行性,进行全尺寸的大空间厂房实体火灾实验,记录顶棚烟气温度场变化。实验发现:对于高大空间建筑,当火源功率较小时,可熔排烟窗很难熔穿开启。采用大涡模拟技术对火灾实验中的烟气温度场进行了预测,预测温度与实验数据基本相吻合。提出基于大涡模拟的可熔排烟窗自然排烟可行性分析方法。

Full size experiment of fire in big space factory was done to investigate the feasibility of natural smoke exhaust with fusible smoke exhaust window. The temperature field of smoke under ceiling was obtained. The experiment indicated that the fusible smoke exhaust window has difficulty to work when the fire power is small in the big space building. The temperature field of smoke in the fire was predicted by large eddy technolo- gy, and the prediction was similar to experiment results. The a- nalysis method of feasibility of natural smoke exhaust with fusi- ble smoke exhaust window was put forward based on the large eddy simulation.