【摘要】 应用数值模拟技术重现了国内某建筑火灾发展的过程,并得到了火灾场景中烟气体积分数、温度、能见度等随时间空间变化的各种重要数据。使用生命伤害模型(LHM)和模拟得到的烟气数据分析了烟气对人造成的危害。模拟结果和分析揭示:在火灾中处在不同位置的房间,其室内的烟气体积分数变化可以分为不同的类型。在远离着火点的房间中,空气温度变化不大,但CO气体的体积分数很高,甚至比距离火源近的房间CO体积分数更高,烟气更容易在那里聚集,并且在很短的时间里,烟气对人构成致命的威胁。这与许多火灾中很多遇难者死于远离火源位置的结果是一致的。更多还原

【Abstract】 The process of development of the domestic building fire was reconstructed,and smoke concentration,the temperature,the visibility and other kind of important data in the fire scene was obstained by applying numerical simulation technology to a building fire.Then the smoke movement,the distribution characteristic was analyzed.The LIFE HAZARD MODEL and data obtained from the simulation was used to evaluate the damage to life.The results and analysis reveals:the concentration of gases can be divided into different types.Away from the point of the building on fire,the air temperature is not high,but the concentration of carbon monoxide gas is higher than the room near the source of fire,smoke are easier to gather there,and the smoke become a deadly threat to people in the building in a very short time.In many of actual fires,lots of people died at the place where is away from the location of the fire.The reconstruction’s results are consistent with that.更多还原