基于火灾动力学模拟器的住宅公寓火灾生长行为研究

Fahim Shahriar Sakib, Riazuddin Ahmed, E. A. Khan
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摘要

火灾事故非常频繁,是孟加拉国近年来的一个主要问题。本文利用火灾动力学模拟器(FDS)对某住宅楼的火灾生长行为进行了数值分析。用FDS制作了一个装有固定可燃物的模型公寓。研究了火灾生长特性,评估了放热速率、温度升高、有毒气体扩散和人员疏散情况。火焰是使用燃烧器函数生成的。对这些模型的计算分析结果进行了分析和讨论。风和通风效果与时间的关系有助于预测公寓不同位置的火灾生长行为。建立疏散模型,说明不同类型药剂对疏散时间和分数有效剂量的影响。FED是有毒气体消耗量的总和,对安全疏散具有重要意义。结果表明,通风效果释放热量,使公寓不易受损。与其他组相比,老年人需要更多的时间才能完全撤离。对火灾紧急情况下安全疏散的临界门长概念进行了论证。化工研究通报21(2020)99-105
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study of Fire Growth Behavior in a Residential Apartment using Fire Dynamic Simulator
Fire accidents are very frequent and a major issue in Bangladesh in recent times. In this paper fire growth behavior in an apartment building is studied through a numerical analysis using Fire Dynamic Simulator (FDS). A model apartment with fixed combustibles was created using FDS. The fire growth characteristics were studied and heat release rate, the rise of temperature, toxic gas dispersion and human evacuation were assessed. The fire was generated using a burner function. Computational analysis results from those models were analyzed and discussed. The relationship of wind and ventilation effect with time helps to predict the fire growth behavior in different location of the apartment. Evacuation modeling was created to illustrate the effect of evacuation time and fractional effective dose (FED) for different types of agents. FED is the summation of toxic gas consumption which is important for safe evacuation. The results show that the ventilation effect releases the heat and makes the apartment less vulnerable. Elderly people took more time for total evacuation than other groups that related to FED percentage. The idea of critical door length is demonstrated for safe evacuation during fire emergencies. Chemical Engineering Research Bulletin 21(2020) 99-105
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