电缆束火灾蔓延机理与预警研究

Research on the Power Cable Fire Spreading and Forecasting

采用固体可燃物热解动力学模型和湍流燃烧大涡模拟方法,研究了电缆通道内电缆束的火灾行为,得到了电缆起火时间与火蔓延速度,通道内烟气温度、组分浓度和速度分布,以及电缆通道内壁与电缆表面温度随时间的变化,给电缆通道的防灭火系统设计提供了参考依据。

The heat-decomposed dynamic model of solid combustibles and the large eddy simulation of combustions were utilized presently to investigate the cable fire in a table channel. The time of cables to ignite, the speed of flame on the cable surface, the distributions of the smoke temperature, species concentration and velocity, and the instantaneous variations of the temperatures on the cable insulated skin and the channel wall with time were.obtained. ＂The conclusion can be used for the design of automated fire protection systems