Abstract The incidence of large-scale fires continues to rise, and the effects of radiation from these fires contributes to their continued spread. Water sprays have been widely used as an effective method to contain thermal radiation from fires. Results from previous studies on the sizes of water droplets in the spray barrier have limitations due to the significant computational time or complex analytical procedure involved. The aim of this study is to determine the optimal size of water droplets in the barrier mist using radiative transfer analysis for effective shielding of the radiation from the surroundings. The radiative properties of water droplets were analyzed using the Mie scattering theory and a radiative transfer analysis of the mist layer was performed. This demonstrated that the spectral reflectance of the mist layer can be controlled by the water droplet diameter. The effectiveness of optimizing the water droplet size in the mist layer to maximize protection from thermal radiation was also validated by experiments to evaluate the radiation shielding performance of the mist barrier.

中文翻译：

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防止危险火灾的热辐射：使用辐射传递分析优化雾障中的微尺度液滴尺寸

摘要 大规模火灾的发生率持续上升，而这些火灾的辐射效应导致其持续蔓延。喷水已被广泛用作控制火灾热辐射的有效方法。由于涉及大量的计算时间或复杂的分析程序，先前关于喷雾屏障中水滴大小的研究结果具有局限性。本研究的目的是使用辐射传递分析来确定屏障雾中水滴的最佳尺寸，以有效屏蔽周围环境的辐射。使用米氏散射理论分析了水滴的辐射特性，并进行了雾层的辐射传输分析。这表明雾层的光谱反射率可以通过水滴直径来控制。优化雾层中的水滴尺寸以最大限度地防止热辐射的有效性也通过实验来验证，以评估雾障的辐射屏蔽性能。