Safety of hydrogen and natural gas blends

氢气和天然气混合物的安全性

• 批准号: 2888392
• 金额: --
• 依托单位: University of Ulster
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2888392
• 关键词: Safety; hydrogen; natural; gas; blends

Safe handling of hydrogen and hydrogen natural gas blends requires an understanding of hazards and associated risks arising from leaks. These include (but are not limited to) hazard distances defined by the extent of the flammable cloud, and thermal effects from jet fire. The impact of leak conditions on dispersion must be understood for typical connections. Understanding of the underlying physical phenomena is key as countries move towards a network with hydrogen blends. Work is needed to adjust safety zones to account for hydrogen blends. An objective of this project is to expand Ulster analytical models for unignited and ignited jets to account for methane and hydrogen-methane blends. The effect of buoyancy on the releases should also be accounted for. The study will focus on a combination of analytical modelling and computational fluid dynamics (CFD) modelling. Deliverables-Critical literature review of unignited and ignited hydrogen, and hydrogen-methane releases, hazards identification and analysis, credible incident scenarios, modelling approaches for hydrogen hazards;-Contemporary models for simulation of unignited and ignited releases of blends-Verification and/or validation of models against available experimental data as relevant;-Simulation of selected incident scenarios;-Formulation of novel safety strategies and engineering solutions;

氢和氢天然气混合物的安全处理需要了解泄漏引起的危害和相关风险。这些包括（但不限于）由易燃云的范围和喷射火焰的热效应定义的危险距离。对于典型的连接，必须了解泄漏条件对色散的影响。了解潜在的物理现象是关键，因为各国正在向氢混合物网络迈进。需要调整安全区以考虑氢混合物。该项目的一个目标是扩展阿尔斯特分析模型，未点燃和点燃的喷气机占甲烷和氢甲烷混合物。还应考虑浮力对释放的影响。该研究将侧重于分析建模和计算流体动力学（CFD）建模的结合。未点燃和点燃的氢气和氢气-甲烷释放的关键文献综述，危险识别和分析，可信的事故情景，氢气危险的建模方法;模拟混合物未点燃和点燃释放的现代模型-根据相关的可用实验数据对模型进行验证和/或确认;模拟选定的事故情景;- 制定新的安全战略和工程解决方案;