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Experimental data and numerical modeling of flashing jets of pressure liquefied gases

机译：压力液化气体闪光喷射的实验数据和数值模型

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摘要

In industrial activities involving liquefied pressurized gases (LPG), there are several situations that can lead to hazardous flashing two-phase jets with toxic and explosive consequences. The objective of this study was to further our comprehension of such phenomena in order to develop tools that will enable operational decisions to be made within the framework of risk assessment. Experimental and numerical models were applied to study the two-phase jet resulting from any LPG releases. They focus especially on the cooling effect that was evidenced by large-scale trial experiments on releases of butane and propane carried out during the Flashing Liquids in Industrial Environment project. For LPG release, experimental observations show that the minimum temperature values are far below the boiling temperature. Experimental evidence completed by a new dedicated numerical model (thermodynamic equilibrium model) able to handle both boiling and vaporization phenomena gives a coherent picture of the two-phase flow behavior after the expansion zone. Experimental data analysis completed by comprehensive numerical simulations provides evidences that the system formed by air, vapor, and liquid droplets tends to reach an equilibrium locally.
机译：在涉及液化加压气体（LPG）的工业活动中，有几种情况可以导致危险的闪烁两相喷射，具有毒性和爆炸性的后果。本研究的目的是进一步了解对此类现象的理解，以制定能够在风险评估框架内能够进行操作决策的工具。应用实验和数值模型来研究由任何LPG释放产生的两相射流。他们专注于丁烷和丙烷释放和丙烷在工业环境项目中的闪蒸液中进行的大规模试验实验所证明的冷却效果。对于LPG释放，实验观察结果表明，最小温度值远远低于沸腾温度。通过新的专用数值模型（热力学平衡模型）完成的实验证据（热力学平衡模型）能够处理沸腾和汽化现象，在膨胀区之后的两相流动行为的相干图片。通过综合数值模拟完成的实验数据分析提供了空气，蒸汽和液滴形成的系统倾向于局部达到平衡的证据。

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  • 来源
    《Process safety progress》 |2021年第1期|e12151.1-e12151.12|共12页
  • 作者

    Jean-Marc Lacome; Cedric Lemofack; Didier Jamois; Julien Reveillon; Benjamin Duret; Francois-Xavier Demoulin;

  • 作者单位

    Institut National de I'Environnement Industriel et des RISques (INERIS) Parc Technologique Alata BP Verneuil-en-Halatte France;

    Institut National de I'Environnement Industriel et des RISques (INERIS) Parc Technologique Alata BP Verneuil-en-Halatte France;

    Institut National de I'Environnement Industriel et des RISques (INERIS) Parc Technologique Alata BP Verneuil-en-Halatte France;

    CORIA-UMR 6614-Normandie Universite CNRS-Universite et INSA de Rouen Campus Universitaire du Madrillet Saint-Etienne-du-Rouvray France;

    CORIA-UMR 6614-Normandie Universite CNRS-Universite et INSA de Rouen Campus Universitaire du Madrillet Saint-Etienne-du-Rouvray France;

    CORIA-UMR 6614-Normandie Universite CNRS-Universite et INSA de Rouen Campus Universitaire du Madrillet Saint-Etienne-du-Rouvray France;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    cooling effect; new numerical model; toxic and explosive consequences;

    机译：冷却效果;新的数值模型;有毒和爆炸性后果;

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