Numerical study of hydrogen dispersion in a fuel cell vehicle under the effect of ambient wind
作者： Xing Yu , Changjian Wang , Qize He
DOI: 10.1016/J.IJHYDENE.2019.03.234
关键词: Automotive engineering 、 Computational fluid dynamics 、 Hydrogen 、 Sunroof 、 Flammable liquid 、 Hydrogen storage 、 Leakage (electronics) 、 Wind speed 、 Environmental science 、 Windshield
摘要: Abstract In the rescue of hydrogen-fueled vehicle accidents, once accidental leakage occurs and hydrogen enters cabin, relatively closed environment is prone to accumulation. Excessive concentration inside cabin may cause suffocation death injured passengers crews, or explosion risk. Based on fuel cell (HFCV) with storage pressure 70 MPa, four different scenarios (i. opened sunroof, ii. door windows, iii. sunroof windows iv. rear windshield) under condition were simulated using computational fluid dynamics (CFD) tools. The distribution flammable area (>4% mole fraction) analyzed, considering effect ambient wind. results show that in case convection between interior exterior via windshield, strongly affected by wind speed. least risk case, can reduce fraction front less than 4%, however always within
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