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http://dx.doi.org/10.9711/KTAJ.2022.24.6.629

CFD analysis of the effect of hydrogen jet flame in road tunnel  

Park, Jinouk (Fire Research Center, Korea Institute of Civil Engineering and Building Technology)
Yoo, Yongho (Fire Research Center, Korea Institute of Civil Engineering and Building Technology)
Kim, Hwiseong (Fire Research Center, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.24, no.6, 2022 , pp. 629-636 More about this Journal
Abstract
Domestic eco-friendly vehicles currently account for 5.8% of the total registered vehicles in Korea. Hydrogen vehicles, one of the representative eco-friendly vehicles, have grown rapidly as they have been expanded to the market based on the government's policy to boost the hydrogen industry. Therefore, it is time to expand the safety review of hydrogen vehicles in various directions according to the increase in supply. In this study, the effect of internal heat damage was analyzed when a jet flame was generated by a hydrogen car in a road tunnel. It was simulated using Fluent, and the amount of jet flame injection was selected in consideration of the hydrogen tank capacity of commercial hydrogen vehicles for road tunnels. In addition, the study was conducted with the direction of the jet flame and the nozzle distance from the tunnel wall as variables. From the results, when the jet flame erupted in the road tunnel, high radiant heat emission of more than 20 kW/m2 was generated in most areas within ±5 m in the longitudinal direction based on the vehicle (spray nozzle) and 5 to 7 m in the lateral direction based on the adjacent tunnel wall.
Keywords
Fuel cell electric vehicle (FCEV); Hydrogen jet fire; Road tunnel; Semi-closed space;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Park, J., Yoo, Y., Kim, H. (2021), "Analysis of effect of hydrogen jet fire on tunnel structure", Journal of Korean Tunnelling and Underground Space Association, Vol. 23, No. 6, pp. 535-547.   DOI
2 Republic of Korea Government (2021b), The 4th master plan for eco-friendly vehicles, pp. 19-59.
3 Ryu, J.O., Lee, H.Y. (2021), "A basic study on the hazard of hydrogen feul cell vehicles in road tunnels", Journal of Korean Tunnelling and Underground Space Association, Vol. 23, No. 1, pp. 47-60.   DOI
4 Ministry of Land, Infrastructure and Transport (2022), Statistical data on eco-friendly vehicle registration trends, pp. 1-2.
5 Republic of Korea Government (2021a), 2030 national greenhouse gas reduction target (nationally determined contribution) enhanced draft, pp. 8-11.