Liquefied petroleum gas fuel fire hazard characteristics such as thermal, toxic, and radiation hazards were investigated in a full–scale compartment. A 0.3 m × 0.3 m sand–filled burner was used as a fire source with quasi–steady–state heat release rate of 40 kW and 160 kW for 300 s and 600 s respectively. The experimental study was carried out in the compartment of size 2.4 m × 3.6 m × 2.4 m with a doorway opening of size 0.8 m × 1 m for ventilation condition. Temperatures, gas concentrations, and irradiance measurements were carried out at different locations in the compartment with respect to time. Numerical simulation studies were performed for validation and predictions for different door aspect ratios using the computational fluid dynamics tool, fire dynamics simulator. Experimental measurements temperatures, velocities, heat flux, and species concentrations at different locations were reported in transient analysis. Numerical predictions were carried out for different door aspect opening ratios and discussed the impact of the thermal, toxic, and radiation hazards. Comparative evaluation of numerical predictions was in good agreement with measurements of experimental data.

中文翻译：

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实车舱内液化石油气火灾的实验与数值模拟研究

液化石油气燃料火灾危险特性，例如热、毒性和辐射危险，在一个全尺寸的隔间中进行了调查。使用 0.3 m × 0.3 m 的充砂燃烧器作为火源，准稳态放热率分别为 40 kW 和 160 kW，持续 300 s 和 600 s。实验研究在尺寸为 2.4 m × 3.6 m × 2.4 m 的隔间中进行，门洞尺寸为 0.8 m × 1 m，用于通风条件。温度、气体浓度和辐照度测量是在隔间内的不同位置随时间进行的。使用计算流体动力学工具火灾动力学模拟器进行了数值模拟研究，以验证和预测不同的门纵横比。实验测量温度、速度、热通量、在瞬态分析中报告了不同位置的物种浓度。对不同的门长宽比进行了数值预测，并讨论了热、毒性和辐射危害的影响。数值预测的比较评估与实验数据的测量结果非常吻合。