An experimental study on self-extinction of tunnel fire under natural ventilation condition

Fire tests with both methanol and propane fires ranging from 5.6 to 16.8 kW were conducted in two 1:20 reduced-scale tunnels with identical cross-section size of 0.45 m wide × 0.23 m high but different lengths, i.e., 20.8 m and 10 m long respectively. Natural smoke control was adopted for both tunne...

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