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Article

Numerical Simulation of Hydrogen Leakage and Diffusion Process of Fuel Cell Vehicle

School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China
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Author to whom correspondence should be addressed.
Academic Editors: Michael Fowler and Joeri Van Mierlo
World Electr. Veh. J. 2021, 12(4), 193; https://doi.org/10.3390/wevj12040193
Received: 24 August 2021 / Revised: 29 September 2021 / Accepted: 9 October 2021 / Published: 15 October 2021
Regarding the problem of hydrogen diffusion of the fuel cell vehicle (HFCV) when its hydrogen supply system leaks, this research uses the FLUENT software to simulate numerical values in the process of hydrogen leakage diffusion in both open space and closed space. This paper analyzed the distribution range and concentration distribution characteristics of hydrogen in these two different spaces. Besides, this paper also took a survey about the effects of leakage rate, wind speed, wind direction in open space and the role the air vents play on hydrogen safety in closed space, which provides a reference for the hydrogen safety of HFCV. In conclusion, the experiment result showed that: In open space, hydrogen leakage rate has a great influence on its diffusion. When the leakage rate doubles, the hydrogen leakage range will expand about 1.5 times simultaneously. The hydrogen diffusion range is the smallest when the wind blows at 90 degrees, which is more conducive to hydrogen diffusion. However, when the wind direction is against the direction of the leakage of hydrogen, the range of hydrogen distribution is maximal. Under this condition, the risk of hydrogen leakage is highest. In an enclosed space, when the vent is set closest to the leakage position, the volume fraction of hydrogen at each time is smaller than that at other positions, so it is more beneficial to safety. View Full-Text
Keywords: fuel cell vehicle; hydrogen; leakage and diffusion; numerical simulation fuel cell vehicle; hydrogen; leakage and diffusion; numerical simulation
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MDPI and ACS Style

Jiao, M.; Zhu, H.; Huang, J.; Zhang, X. Numerical Simulation of Hydrogen Leakage and Diffusion Process of Fuel Cell Vehicle. World Electr. Veh. J. 2021, 12, 193. https://doi.org/10.3390/wevj12040193

AMA Style

Jiao M, Zhu H, Huang J, Zhang X. Numerical Simulation of Hydrogen Leakage and Diffusion Process of Fuel Cell Vehicle. World Electric Vehicle Journal. 2021; 12(4):193. https://doi.org/10.3390/wevj12040193

Chicago/Turabian Style

Jiao, Mingyu, Haoran Zhu, Jinglong Huang, and Xin Zhang. 2021. "Numerical Simulation of Hydrogen Leakage and Diffusion Process of Fuel Cell Vehicle" World Electric Vehicle Journal 12, no. 4: 193. https://doi.org/10.3390/wevj12040193

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