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| Simulation and analysis on leakage and explosion of high pressure hydrogen in hydrogen refueling station |
| LI Jing-yuan, ZHAO Yong-zhi, ZHENG Jin-yang |
| Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China |
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Abstract FLACS software based on computational fluid dynamics approach was used for simulation and analysis on the leakage and explosion of high pressure hydrogen storage cylinder in the Shanghai World Expo hydrogen refueling station. The effect of wind speed was analyzed. The whole process of leakage and explosion accident was successfully simulated by FLACS, and the real time three-dimensional display of over-pressure wave was given. Results showed that the explosion intension significantly increased when congestion of obstacle region and wind speed increased. Hazard distance first decreased and then increased when the wind speed increased. The calculation value of hazard distance obtained by empirical formula was slightly higher than the simulation results．
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Published: 10 September 2015
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加氢站高压氢气泄漏爆炸事故模拟及分析
运用基于计算流体动力学的FLACS软件模拟上海世博加氢站内高压储氢气瓶发生泄漏并引发爆炸的情况,研究不同环境风速对高压氢气泄漏爆炸事故的影响规律.结果表明：基于FLACS的模拟方法,能够实现高压氢气泄漏爆炸事故全过程的模拟,对爆炸超压波进行实时的三维展示；爆炸强度随障碍区域拥塞度和环境风速的增大而显著增强,危害距离随环境风速的增大呈先减小后增大的趋势.对比危害距离模拟值与经验公式计算值可以发现,计算值略高于模拟结果,经验公式偏保守.
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