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数字和实验研究烟雾扩散特征的道与天花板梁

Xiangliang Tian¹, Xiaoqiang Ding², Linchuan Xiang³

¹Institute of Mine Safety Technology, China Academy of Safety Science and Technology, Beijing, 100012, China.

Scientific reports

|December 5, 2024

概括

道中的天花板梁由于热浮力而对火灾烟雾扩散产生重大影响. 更高的梁和更近的距离增加了天花板温度,加速了烟雾减弱,有助于道的消防安全设计.

科学领域:

消防安全工程消防安全工程
道工程是指道工程的工程.
流体动力学流体动力学

背景情况:

天花板梁在道结构中很常见.
热浮力影响了道中的火烟行为.
道天花板结构显著影响烟雾扩散.

研究的目的:

研究天花板梁高度和间距对道火灾中烟雾扩散的影响.
分析天花板结构对火灾烟雾特征的影响.
为道火灾烟雾行为开发预测模型.

主要方法:

进行模型实验.
进行了数值模拟.
分析了火灾烟雾扩散模式.

主要成果:

最大温度的上升和下降遵循指数式的模式.
增加光束高度和减少间距导致天花板温度升高.
更高的光束和更近的距离加快了纵向温度减弱.

结论:

开发了天花板温度上升的预测模型.
创建了一个无维度模型用于温度减弱.
模型与实验数据有很好的一致性 (±15%的误差).
这些发现支持类似结构的道的烟雾预防和排气设计.

关键词:

在天花板上,有天花板梁.天花板温度最高的温度是什么释放热量的速度是多少温度衰变导致的温度衰变.道发生火灾

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