Tempered glass, as an important type of safety glazing, is extensively used in high-rise buildings. However, little is known about the fallout behavior of tempered glass in the compartment with different fire locations. Therefore, in this work, the exposed framed glass panes with the dimension of 815 × 815 × 6 mm were heated by a pool fire in the compartment. The fuel pans were placed at six different locations in the compartment. It was found that the fallout time of tempered glass increased with a decrease in the distance between the fuel pan and glass panes; when the fire was moved to the wall side, the fallout time of tempered glass was longer. Besides, the temperature gradient of the glass surface at the exposed area was insignificant when the fire source was at the center line of the doorway opening, while there was an evident temperature gradient of the glass surface on the height direction due to the apparent smoke layer in the upper of the compartment for near wall fire locations. In addition, CFD numerical simulations were conducted using FDS software to observe the temperature and velocity fields inside the compartment with different fire locations. It was found that when the fire was moved to the wall side, the circulation flow was formed at both the high-temperature region near the fire source and the low-temperature region on the left of the compartment.

中文翻译：

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钢化玻璃沉降物与外壳火灾动力学之间相互作用的实验和数值研究

钢化玻璃作为一种重要的安全玻璃，广泛应用于高层建筑。然而，人们对钢化玻璃在不同火灾位置的车厢内的沉降行为知之甚少。因此，在本作品中，尺寸为815×815×6毫米的外露框玻璃板被车厢内的池火加热。油盘放置在车厢内的六个不同位置。研究发现，钢化玻璃的沉降时间随着油盘与玻璃板之间距离的减小而增加；当火移到墙边时，钢化玻璃的消散时间更长。此外，当火源位于门口中心线时，暴露区域玻璃表面的温度梯度不明显，而由于明显的烟层，玻璃表面在高度方向上存在明显的温度梯度。位于隔室上部，用于靠近墙壁的火灾地点。此外，利用FDS软件进行CFD数值模拟，观察不同起火位置的车厢内温度场和速度场。结果发现，当火势移至墙侧时，靠近火源的高温区和车厢左侧的低温区均形成环流。