非稳态火源热释放速率在火灾网络模型中的应用

The application of heat release rate of fuel in fire network model

详细分析了目前常用的非稳态火源热释放速率计算式,并对其特点和参数范围进行了对比讨论;将各种非稳态火源热释放速率计算式嵌入建筑物火灾烟流性状预测软件并进行了算例验证。结果表明,加入非稳态火源的烟流性状预测软件计算结果与日本同类成功软件的计算结果吻合得很好,且曲线走势更平滑,并减轻了输入的工作量。结果证实了对烟流性状预测软件火源部分的改进是成功的。

This paper in detail analyses the formulas of heat release rate of fuel usually used at present, contrasts the features of these formulas and discusses the parametric ranges. Some heat release rate formulas are added to the application software for calculation on the properties of the fire smoke flow in building. By a comparison between the result date of the application software and the date in the same kind of Japanese succeeded application software, it has been proved that the calculation curve track of the improved application software is more smoothness and the work to input has become some easy. The improved application software is successful.