Abstract In present research, a CFD-based approach together with the validated finite volume N–S solver had been applied to precisely analyze the spill flame characteristics in adjacent space induced by fire incident in a Chemical Hazardous Materials (CHMs) container. Coupling mechanism between spill flame behavior and opening types of CHMs container was discussed in terms of different container vent sizes integrated with equivalence theory of fire source. Effects of flame height, width, velocity vector and temperature profile on spill flame features were examined. Spill flame propagation in adjacent space between CHMs containers was related to the opening size and adjacent distance. It was found that spill flame height and width in adjacent space between containers have separate forms of change. The flame temperatures in adjacent space were determined by an overall energy balance between Heat Release Rate (HRR) inside CHMs container and the adjacent container constraint using air entrainment effect. Temperature field changes significantly and thermal hazards led to spontaneous ignition in adjacent CHMs containers, further resulting in catastrophic domino accidents. Considering spill flame behavior and variation coefficient of entrainment ω, the modified non-dimensional performance models for characteristic parameters were proposed, which could significantly improve prediction effectiveness of thermal hazards from CHMs container fire.

中文翻译：

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相邻空间对化学危险品容器火灾溢出火焰的影响

摘要 在目前的研究中，基于 CFD 的方法与经过验证的有限体积 N-S 求解器一起被应用于精确分析由化学危险材料 (CHMs) 容器中的火灾事件引起的相邻空间中的溢出火焰特征。结合火源等价理论，结合不同容器排气口尺寸，讨论了泄漏火焰行为与CHMs容器开口类型的耦合机制。检查了火焰高度、宽度、速度矢量和温度分布对溢出火焰特征的影响。CHMs 容器之间相邻空间的溢出火焰传播与开口尺寸和相邻距离有关。发现容器之间相邻空间的溢出火焰高度和宽度有不同的变化形式。相邻空间中的火焰温度由 CHMs 容器内的热释放率 (HRR) 与使用空气夹带效应的相邻容器约束之间的整体能量平衡确定。温度场变化显着，热危害导致相邻 CHMs 容器自燃，进一步导致灾难性的多米诺骨牌事故。考虑溢出火焰行为和夹带变异系数ω，提出了特征参数的修正无量纲性能模型，可显着提高CHMs容器火灾热危害的预测效果。温度场变化显着，热危害导致相邻 CHMs 容器自燃，进一步导致灾难性的多米诺骨牌事故。考虑溢出火焰行为和夹带变异系数ω，提出了特征参数的修正无量纲性能模型，可显着提高CHMs容器火灾热危害的预测效果。温度场变化显着，热危害导致相邻 CHMs 容器自燃，进一步导致灾难性的多米诺骨牌事故。考虑溢出火焰行为和夹带变异系数ω，提出了特征参数的修正无量纲性能模型，可显着提高CHMs容器火灾热危害的预测效果。