Fig 1.
(a) 3D view; (b) right side view; (c) diagram of equipment cabin.
Fig 2.
Geometric model of the tunnel.
(a) Overall top view; (b) section of tunnel; (c) station model.
Fig 3.
Local grids in the computational domain.
Fig 4.
Computational domain and boundary conditions.
Fig 5.
Schematic of the measurement points arrangement.
Fig 6.
Train and tunnel model diagram with the arrangement of measurement points in the test.
Table 1.
Parameter values for verifying mesh independence.
Fig 7.
Validation of the results from the numerical calculation method.
Table 2.
Comparison of the experimental and numerical calculation methods.
Fig 8.
Scenario of a moving fire source.
Fig 9.
Curve of train speed.
Fig 10.
Smoke velocity for different fire sources.
(a) Head car; (b) middle car; (c) tail car.
Fig 11.
Distribution of smoke velocity for different fire locations.
(a) t = 100 s; (b) t = 250 s.
Table 3.
Time of smoke counterflow for different fire sources.
Fig 12.
Temperature variation for different fire locations.
(a) Head car; (b) middle car; (c) tail car.
Fig 13.
Distribution of temperature for different fire locations.
(a) t = 100 s; (b) t = 250 s.
Table 4.
Temperatures for different fire locations at t = 250 s.
Fig 14.
Smoke concentrations for different fire locations.
(a) Head car; (b) middle car; (c) tail car.
Fig 15.
Distribution of smoke concentration for different fire locations.
(a) t = 100 s; (b) t = 250 s.
Table 5.
Smoke concentration for different fire locations at t = 250 s.