Yao W, Wang J, Liu XP (2005) 'Numerical simulation on deflagration in tunnel fires.' (Science Press Beijing: Beijing) 1454-1459

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Keywords:

tunnel fire, deflagration, numerical simulation, longitudinal ventilation, smoke flow, velocity, spread, model,

Abstract: In this paper, a numerical simulation of the propagating rule of a tunnel fire in a narrow long room and combustibility of combustible in a tunnel room by using CFD software synthetically is carried out. The paper brings forward a special phenomenon-deflagration, which may occur in tunnel fires. This phenomenon is difficult to be observed because of the special close structure of tunnel and the small probability of occurrence of tunnel fires. On this account, no such case has been reported. The detailed analysis of forming mechanism, the distribution and dynamic evolution of physical quantity involved are presented with the purpose of providing theoretical supports for fire fighting and decision-making. The results obtained extend the range how a deflagration can occur and promote a better understanding of the deflagration phenomenon.