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首页> 外文期刊>International Journal of Technology >Modeling of Smoke Control in Underground Parking-garage Fires
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Modeling of Smoke Control in Underground Parking-garage Fires

机译：地下停车场火灾中烟雾控制的建模

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Smoke is the real threat in a fire in an enclosed, underground parking garage, and is a significant issue and very critical for firefighters dealing with fire. Special attention should be paid to fire safety, especially for those with multiple floors underground. A model of the smoke movement in a basement was established using Fire Dynamics Simulator (FDS) 6.0 software. In this paper, the study undertaken used a basement model of 60 m (length) × 30 m (width) × 3 m (height) and has three typical floors. Smoke ventilation shafts were provided for the basement. A well-controlled liquid pool fire with a heat release rate (HRR) of 2 MW was used as an input parameter. The ventilation strategy was achieved through a mechanical exhaust fans and make-up air fans. The required ventilation was based on the air changing ten times per hour. The following parameters were varied: the location of the fire, the presence or absence of sprinklers, the presence or absence of a smoke-extraction system, the presence or absence of openings for incoming air, and the presence or absence of a jet fan and ducting. The impact of jet fans (induction type) was also addressed in several simulations. Smoke modeling was investigated under different fire scenarios. Simulations were conducted for smoke and heat control using forced, mechanical, horizontal ventilation. When the combination of a jet fan and ducting was applied, the fastest time for smoke removal was achieved compared to the other scenarios.
机译：烟雾是封闭的地下停车场大火中的真正威胁，是一个重要问题，对于消防员来说非常重要。应特别注意防火安全，尤其是对于地下多层楼的消防人员。使用Fire Dynamics Simulator（FDS）6.0软件建立了地下室烟雾运动的模型。在本文中，所进行的研究使用了60 m（长）×30 m（宽）×3 m（高）的地下室模型，并具有三个典型楼层。地下室设有烟雾通风井。放热率（HRR）为2 MW的受控良好的液池火被用作输入参数。通风策略是通过机械排风扇和补充风扇实现的。所需的通风基于每小时换气10次。改变了以下参数：着火的位置，是否存在洒水喷头，是否存在排烟系统，是否存在进入空气的开口以及是否存在射流风扇和管道。在几个模拟中也解决了喷气风扇（感应式）的影响。在不同的火灾场景下研究了烟雾模型。使用强制，机械，水平通风对烟气和热量进行了模拟。与其他方案相比，当结合使用喷气风扇和风道时，可以实现最快的排烟时间。

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