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Improvement in the prediction of gasoline pool fire behaviour: CFD modelling and validation
Journal of Loss Prevention in the Process Industries ( IF 3.5 ) Pub Date : 2020-10-10 , DOI: 10.1016/j.jlp.2020.104317
Sebastián Uribe , Luis Zárate , Ahti Suo-Anttila , Mario E. Cordero , Joseph D. Smith

The development and implementation of mathematical models through Computational Fluid Dynamics (CFD) techniques has been acknowledged as a promising tool for the prediction of hydrocarbon pool fires behaviours. In this sense, different approaches, with different assumptions and simplifications, and accounting for different phenomena, have been developed in the literature. However, the deviations in the predictions of the experimentally determined parameters, such as temperatures profiles, flame heights and radiative heat flux, by the implemented models are still high. Therefore, the implementation of these models to predict combustion phenomena and flame behaviours for various scenarios is limited. In this work, the software C3D is used to model gasoline pool fires of different diameters, and under different wind conditions, in order to improve the quality of the predictions of the flame behaviour. The modelled cases correspond to the experimental studies reported in literature. The results from the implemented model show an improved predictive quality when compared with other modelling works reported on literature for the same experimental cases. The deviations in the time averaged temperature, flame height, surface emissive power and radiative heat flux, has been calculated to be 5.0%, 0.05%, 6.32% and 3.82%, respectively.



中文翻译:

改进汽油池火灾行为的预测:CFD建模和验证

通过计算流体动力学(CFD)技术开发和实施数学模型已被公认为是预测碳氢化合物库火行为的有前途的工具。从这个意义上说,文献中已经开发出了具有不同假设和简化方式并考虑了不同现象的不同方法。然而,通过实施的模型对实验确定的参数(例如温度分布,火焰高度和辐射热通量)的预测的偏差仍然很高。因此,用于预测各种情况下的燃烧现象和火焰行为的这些模型的实施受到限制。在这项工作中,软件C3D用于对不同直径和不同风况下的汽油池火灾建模,为了提高火焰行为预测的质量。建模案例与文献报道的实验研究相对应。与文献报道的相同实验案例的其他建模工作相比,已实现模型的结果显示出更高的预测质量。经计算,时间平均温度,火焰高度,表面发射功率和辐射热通量的偏差分别为5.0%,0.05%,6.32%和3.82%。

更新日期:2020-10-13
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