Highway Tunnel Simulate Of The Spread Of Fire

With economic development and people's daily life level, the corresponding emergence of a variety of highway tunnel. According to statistics, China has become the world community is now on the largest highway tunnel and longest mileage. However, with the highway tunnel increasing mileage, operating speed and increasing traffic density, types of tunnel number of incidents and a corresponding increase in the frequency of. Have occurred in a variety of tunnel accident, the tunnel of fire is one of the most serious, causing casualties and material damage is also the largest, for various reasons resulting in fire accidents at home and abroad have many.Highway tunnel fire simulation study is designed to reduce the long highway tunnel fire may cause casualties, lower long highway tunnel fire may cause damage to property.This paper first introduces the simulation of fire at home and abroad of the status quo, the fire combustion process, the characteristics of the tunnel fire and the use of the mathematical model.This article focuses on the use of finite element method to model grid in order to achieve simulation results more in line with the actual purpose of the parameters and the impact of fires in more detail. Of the simulation process used in the FDS software and FORTRAN77 language, have also done a more detailed explanation. In addition, focusing on the tunnel when the fire temperature, heat release rate, smoke and dust of the vertical and horizontal distribution and temperature, heat release rate, smoke and dust over time, as well as the changes of temperature field in the fire, heat release rate, smoke the spread of the. A slice of the model to deal with, you can view real-time dynamics of the tunnel or any point in the parameter plane.