Table 1.
Proportional coefficient statics [34].
Fig 1.
Experimental model diagram.
Fig 2.
Schematic diagram of the equipment layout.
Fig 3.
Distribution map of the temperature measurement points of the ceiling.
Table 2.
Experimental working conditions.
Fig 4.
Flowchart of the experimental research methodology.
Fig 5.
Part of the flame combustion form under working conditions of stationary fire source.
Fig 6.
Part of the flame combustion form under various working conditions of the mobile fire source.
Fig 7.
Flame probability contour under each operating condition.
Fig 8.
The flame height and inclination vary with the height of the fire source and the speed of movement.
(a) Flame height changes (b) Changes in flame inclination.
Fig 9.
Fitting curves of the relationship between flame height, the effective height of the tunnel and ignition moving velocity at different heights.
Fig 10.
Fitting results of the slope a of the modified formula at different heights.
Table 3.
Statistics of Prediction Errors for the Ratio of Flame Height to Effective Tunnel Height.
Fig 11.
Comparison on results of this model and previous research.
Fig 12.
Smoke spread When the speed is 0.1 m/s and 0.15 m/s.
Fig 13.
Smoke spread When the speed is 0.3 m/s and 0.5 m/s.
Fig 14.
Smoke spread When the speed is 0.8 m/s and 1.0 m/s.
Fig 15.
Smoke backflow distance when V = 0.1 m/s.
Fig 16.
The thickness of the smoke when the ignition source is moved to 8 m.
Fig 17.
Temperature variation diagram of different measurement points. (a) v=0.1 m/s; (b) v=0.15 m/s; (c) v=0.3 m/s; (d) v=0.5 m/s; (e) v=0.8 m/s; (f) v=1.0 m/s.
Fig 18.
The average temperature of the measurement point under each working condition at 60 s.
Fig 19.
Fire plume partition in the inclined state.
Table 4.
Maximum uncertainty of parameters.