Boiling liquid expanding vapor BLEVE events are notoriously difficult to model. Recently a new approach has been suggested and implemented within the code exploCFD which employs a hybrid approach for the modeling of multiple types of explosions including BLEVEs. The general approach is that the results from an analytical model are fed as a source term into a CFD calculation to model the wider domain. Here we propose a new analytical model for the modeling of BLEVE events to be used within the framework of a hybrid approach. The base Graham Kenney source term model, which predicts the source maximum pressure, is modified and also coupled with the CSC gas explosion model to incorporate the capability to model the subsequent ignition of the fuel in a complex congested and/or confined environment. We test the model against several experiments and compare the key parameters of BLEVE events which are: the maximum overpressure, and the impulse and the time history of the first peak. The simulated predictions of these key parameters using this method are shown to far outperform previous CFD, analytical and hybrid models.

中文翻译：

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BLEVE 事件混合模型的 CSC 耦合 Graham Kenney 源术语：制定、实施和验证

众所周知，沸腾液体膨胀蒸汽 BLEVE 事件很难建模。最近，在代码 exploCFD 中提出并实施了一种新方法，该方法采用混合方法对包括 BLEVE 在内的多种类型的爆炸进行建模。一般方法是将分析模型的结果作为源项输入 CFD 计算，以对更广泛的域进行建模。在这里，我们提出了一种新的分析模型，用于对混合方法框架内使用的 BLEVE 事件进行建模。对预测源最大压力的基础 Graham Kenney 源项模型进行了修改，并且还与 CSC 气体爆炸模型相结合，以结合在复杂的拥挤和/或受限环境中对燃料的后续点火进行建模的能力。我们针对多个实验测试模型，并比较 BLEVE 事件的关键参数，即：最大超压、第一个峰值的脉冲和时间历史。使用这种方法对这些关键参数的模拟预测显示远远优于以前的 CFD、分析和混合模型。