We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Influence of subway train fire locations on the characteristics of smoke movement in a curved tunnel.
- Authors
Zhou, Dan; Li, Jinzhu; Hu, Tianen; Chen, Tao
- Abstract
Scenario models of a moving subway train can help investigate the influence of different fire locations on smoke propagation characteristics in curved tunnels. To this end, this study adopts the three-dimensional Unsteady Reynolds Average Navier-Stokes equations method and the renormalization group k-ε two-equation turbulence model with buoyancy correction for numerical analysis. The motion of the train is replicated using the slip grid technique. The results indicate that when a fire breaks out on a moving train in tunnels, the piston wind leads the longitudinal movement of the smoke. If a fire erupts in the head or middle car of a moving train, the time of smoke backflow is delayed by 30 s or 17 s, respectively, compared to that for the tail car. The obtained results provide a theoretical basis for reasonably controlling the smoke flow in subway tunnels and reducing casualties in fire accidents.
- Subjects
SMOKE; SUBWAY tunnels; TUNNELS; NAVIER-Stokes equations; SUBWAYS; RENORMALIZATION group; FIRE victims
- Publication
PLoS ONE, 2023, Vol 17, Issue 1, p1
- ISSN
1932-6203
- Publication type
Article
- DOI
10.1371/journal.pone.0279818