受限空间氢能源汽车泄漏燃爆特性研究现状及展望

Current Status and Prospects of Research on the Leakage and Explosion Characteristics of Hydrogen Energy Vehicles in Confined Space

为探究受限空间内氢能源汽车泄漏燃爆特性的研究现状,采用文献调研法从仿真分析和实验研究两个角度,讨论氢能源汽车在受限空间内泄漏形成射流火和泄漏点火爆炸的研究现状。对于受限空间内氢气射流火特性,仿真分析研究揭示了氢气在不同通风条件、泄漏角度、泄漏速率下的射流火行为,分析了其火行为特征参数分布规律,但受限空间内氢气射流火实验研究则极度匮乏。针对受限空间内氢气泄漏爆炸特性,仿真分析和实验研究均强调了氢气浓度分布、释放速率和受限程度对爆炸压力波传播的影响。最后,提出了受限空间内氢能源汽车泄漏燃爆特性的研究展望,建议未来应结合实验研究、数值模拟和理论分析方法,建立完善的受限空间内氢能源汽车泄漏燃爆的温度、压力分布模型、安全距离预测模型和通风抑制模型等。

In order to investigate the current research status of the leakage and explosion characteristics of hydrogen energy vehicles in confined space,using the method of literature research,the current status of research on jet fire and leak point explosion of hydrogen energy vehicles in confined space was discussed from the perspectives of simulation analysis and experimental research.For the characteristics of hydrogen jet fire in confined space,numerical simulation study revealed the behavior of hydrogen jet fire under different ventilation conditions,leakage angles,and leakage rates,the distribution law of characteristic parameters was also analyzed.However,the experimental study of hydrogen jet fire in confined space was extremely scarce.In addition,regarding the explosion characteristics of hydrogen leakage in confined space,both simulation and experimental studies emphasized the influence of hydrogen concentration,release rate,and confinement degree on the propagation of explosion pressure waves.Finally,the article proposed prospects for the future research on the leakage and combustion explosion characteristics of hydrogen energy vehicles in confined space.It is suggested that in the future,experimental research,numerical simulation,and theoretical analysis methods should be combined to establish temperature and pressure distribution model,safety distance prediction model,and ventilation suppression model,etc.for hydrogen energy vehicle leakage and explosion in confined space.