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首页> 外文会议>Aunual Mary Kay O Connor Process Safety Center International Symposium >CFD Modeling of LNG Flammable Vapor Cloud Dispersion
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CFD Modeling of LNG Flammable Vapor Cloud Dispersion

机译：LNG易燃蒸汽云分散的CFD建模

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The simulation of LNG flammable vapor cloud dispersion plays a key role in the safe design of LNG terminals and other facilities. With large scale and often complex release scenarios, the scope for model testing is limited and so computational fluid dynamics (CFD) offers a valuable predictive tool, particularly where uneven terrain or obstructions are present and simpler simulation methods may be insufficient. In this study, CFD is used to simulate a range of published LNG vapor and other dense gas dispersion experiments. Details of the setup used to model both the model scale and full scale releases included in the different datasets is presented with emphasis placed on the key model setup choices made in each case. In particular, factors such as the computational mesh and processing and interpretation of data from the completed run were examined. Finally, the numerical results computed are compared with experimental point-wise and arc-wise maximum concentration data to validate the CFD models. The individual challenges presented by each dataset and ability of the CFD model to reproduce experimental measurements in each case is analyzed and discussed.
机译：LNG易燃蒸汽云分散的模拟在液化天然气终端和其他设施的安全设计中起着关键作用。大规模且经常复杂的发布场景，模型测试的范围是有限的，因此计算流体动力学（CFD）提供了有价值的预测工具，特别是在存在不均匀的地形或障碍物的情况下，并且更简单的模拟方法可能不足。在该研究中，CFD用于模拟一系列公开的LNG蒸气和其他致密气体分散实验。用于模拟不同数据集中包含的模型刻度和全尺度版本的设置的详细信息，并在每种情况下都有重点放置在键模型设置选择上。特别是，检查了诸如计算网格和处理和从完成运行的数据的处理和解释的因素。最后，将计算的数值结果与实验点和最大浓度数据进行比较，以验证CFD模型。分析并讨论了每个数据集中的各个数据集和CFD模型在每种情况下再现实验测量的能力的个人挑战。

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