关于燃料电池公交车泄漏和爆炸的数值模拟研究
Yidong Wang1, Chaoyang Xu1,2,3, Guanxi Zhao2,3
1School of Transportation and Automotive Engineering, Xihua University, Chengdu, 610039, Sichuan, China.
Scientific reports
|August 30, 2025
概括
燃料电池公共汽车存在泄漏安全风险. 模拟显示积在机顶部, 背部泄漏造成最严重的危险和潜在的爆炸.
科学领域:
- 工程
- 化学工程
- 安全工程
背景情况:
- 燃料电池公共汽车为公共交通提供了可持续的替代方案.
- 确保气系统的安全,特别是关于泄漏和爆炸风险,对于广泛采用至关重要.
研究的目的:
- 调查与燃料电池公共汽车泄漏和爆炸相关的安全挑战.
- 在各种泄漏场景下分析乘客内的散模式.
- 评估由火引起的热和过压危险.
主要方法:
- 计算流体动力学 (CFD) 模拟用于模拟扩散和爆炸动力学.
- 模拟考虑了公共汽车内的不同泄漏位置和流量.
- 分析了点火时间和源位置对危险传播的影响.
主要成果:
- 在机顶部发现了一层稳定度的.
- 在后墙附近的泄漏导致度最高.
- 较高的流量加速了可燃的扩散.
- 燃烧模拟显示内部压力迅速增加和外部二次爆炸.
- 发现热风险比过压风险更为重要.
- 背部点燃的火焰呈现了最远的高温危险范围 (10.88米).
结论:
- 这项研究提供了有关在公共汽车等狭窄空间的重要见解.
- 该研究指导了燃料电池公共汽车的风险评估和应急响应计划.
- 结果有助于制定更安全的使用能源的公共交通安全协议.
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