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Figure 1.
Tunnel geometry with sinusoidal floor.
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Figure 2.
Geometry mesh.
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Figure 3.
Temperature contour for (a) Fu's temperature contour[22] and (b) the present our results.
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Figure 4.
Evolution of temperature as a function of time.
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Figure 5.
Temperature trend without ventilation as a function of tunnel height at 5 m from the fire source.
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Figure 6.
Temperature trend without ventilation as a function of tunnel height at 50 m from the fire source.
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Figure 7.
Temperature trend without ventilation as a function of tunnel height at 70 m from the fire source.
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Figure 8.
Temperature trend without ventilation as a function of tunnel height at 130 m from the fire source.
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Figure 9.
Evolution of the temperature for the ventilation velocity V = 2.9 m/s.
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Figure 10.
Evolution of the temperature for the ventilation velocity V = 5.8 m/s.
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Figure 11.
Evolution of the temperature with ventilation according to the height of the tunnel at different distances from the fire source.
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Characteristics Dimensions Tunnel length L (m) 300 Tunnel height H (m) 7.22 Tunnel width W (m) 10.5 Amplitude of the sinusoid α (m) 2.4 Size of fire pit (m3) 2 × 2 × 2 Table 1.
Dimensional characteristics of the tunnel.
Figures
(11)
Tables
(1)