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Volume 59 Issue 1
Jan.  2024
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Journal of Southwest Jiaotong University  > 2024  >  59(1): 81-86.
XIE Yongliang, LYU Na. Explosion Hazard Analysis of Leaked Hydrogen in Tunnels Under Longitudinal Ventilation[J]. Journal of Southwest Jiaotong University, 2024, 59(1): 81-86. doi: 10.3969/j.issn.0258-2724.20220222
Citation: XIE Yongliang, LYU Na. Explosion Hazard Analysis of Leaked Hydrogen in Tunnels Under Longitudinal Ventilation[J]. Journal of Southwest Jiaotong University, 2024, 59(1): 81-86. doi: 10.3969/j.issn.0258-2724.20220222
shu

Explosion Hazard Analysis of Leaked Hydrogen in Tunnels Under Longitudinal Ventilation

doi: 10.3969/j.issn.0258-2724.20220222

  • School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China

  • Received Date: 02 Apr 2022
  • Rev Recd Date: 26 Sep 2022
    • Available Online: 12 Oct 2023
  • Publish Date: 13 Oct 2022
    Abstract

  • In order to investigate whether longitudinal ventilation can effectively control the diffusion of leaked hydrogen in tunnels and reduce the overpressure hazards of flammable hydrogen clouds, a square tunnel with a length of 100 m was studied. The hydrogen leakage and diffusion process in the tunnel were numerically simulated by using FLUENT software. Based on the classification of damage of combustible hydrogen cloud explosion overpressure to people and buildings, the effect of longitudinal ventilation on reducing the harm of hydrogen leakage and explosion in the tunnel was analyzed. The results show that under calculated conditions, the longitudinal ventilation velocity in the case of a hydrogen jet fire in the tunnel is 6.5–8.0 m/s. Longitudinal ventilation can effectively control the leakage and diffusion of hydrogen in the tunnel, but it fails to eliminate the explosion possibility and harm of hydrogen leakage in the tunnel.

     

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    • References(15)
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