Abstract Jet fires and their consequences are one of the significant factors responsible for catastrophic events in industrial process units. In this research, various types of turbulence models were investigated to simulate a vertical propane jet fire using computational fluid dynamics (CFD). CFD was applied to evaluate the following turbulence models of k-e, SST, BSL, BSL RS and the Realizable k-epsilon (RNG k-e), the Eddy Dissipation Concept (EDC) for combustion, and the Monte Carlo model for radiation. All the above-mentioned turbulence models are used for a temperature range of 1500–1700 K. The results showed that the SST turbulence model is the best option, with average error of 4.7 % for a jet fire simulation, with a lower computational time. The simulation of the jet fire shape at surface temperature of 800 K was also compared with the experimental data obtained under the same conditions. By taking into account the time parameter in the simulation, the predicted ratio of flame length and equivalent flame diameter results are in good agreement with the experimental jet fire data.

中文翻译：

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基于实验和计算研究的垂直丙烷喷射火几何热特征的新简化计算模型

摘要 喷射火及其后果是造成工业过程单元灾难性事件的重要因素之一。在这项研究中，研究了各种类型的湍流模型，以使用计算流体动力学 (CFD) 模拟垂直丙烷喷射火灾。应用 CFD 来评估以下 ke、SST、BSL、BSL RS 和 Realizable k-epsilon (RNG ke) 湍流模型、燃烧的涡流耗散概念 (EDC) 和辐射的 Monte Carlo 模型。上述所有湍流模型均用于 1500-1700 K 的温度范围。结果表明，SST 湍流模型是最佳选择，射流模拟的平均误差为 4.7%，计算时间较短。800 K 表面温度下射流火焰形状的模拟也与相同条件下获得的实验数据进行了比较。通过考虑模拟中的时间参数，预测的火焰长度与等效火焰直径比结果与实验喷射火数据吻合良好。