Numerical simulation on the influence of ventilation conditions on double fire sources in tunnel
Tunnel fire is a great threat to transportation and personnel safety,and once a fire occurs,it is easy to form multiple fire sources,resulting in more serious secondary injuries.In this paper,FDS is used to conduct numerical simulation of double fire sources in tunnels under natural and longitudinal ventilation conditions,and the temperature distribution of double-fire source fires in tunnels under different ventilation conditions is investigated,as well as the influence law of wind speed on temperature distribution.The simulation results show that:in the case of natural ventilation,the maximum temperature rise of the tunnel ceiling decreases with the increase of the distance between fire sources;in the case of longitudinal ventilation,the maximum temperature rise of the tunnel ceiling decreases with the increase of the wind speed.
natural ventilationlongitudinal ventilationtunnel firedouble fire sourcesnumerical simulation
NETL
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