利用计算流体力学技术对火灾早期的温度和烟雾传播进行了建模，并与在加拿大蒙特利尔市的一条正在运行的公路隧道中进行的现场试验获得的数据进行了比较。在这些试验期间，测量了火灾特征，包括温度和烟雾在隧道内的传播。模拟了两种火灾场景:车下汽油池火灾和车后汽油池火灾。模拟中使用的估计火灾规模为650千瓦。 设置每个模拟的初始和边界条件，以模拟相应试验的条件。对温度和烟雾光密度测量进行了比较。总的来说，数值预测和实验数据之间进行了有利的比较。火灾下游的天花板温度随着与火源距离的增加而降低，烟雾光密度也是如此。车后火灾产生的天花板温度高于车下火灾产生的天花板温度。 沿隧道中心横截面的温度变化表明，最高天花板温度出现在火灾下游3~5m处，因为隧道内的气流使烟羽倾斜。火灾位置对隧道内天花板温度的发展有重大影响。火灾位置的气流条件会显著影响隧道内的烟雾和温度分布，这也会影响探测系统的性能。单位:SICITIONS:ASHRAE交易，第卷。 第115页。2、路易斯维尔2009

Temperature and smoke spread in the early stage of a fire were modeled, using computational fluid dynamic techniques, and compared with data obtained from field tests conducted in an operating roadway tunnel in the City of Montreal, Canada. Fire characteristics, including temperatures and smoke spread over the tunnel were measured during these tests. Two types of fire scenarios were simulated: gasoline pool fires under vehicles and gasoline pool fires behind vehicles. The estimated fire size used in the simulations was 650 kW. The initial and boundary conditions of each simulation were set to mimic the conditions of the corresponding test. Comparisons were made to temperature and smoke optical density measurements. In general, favourable comparisons between the numerical predictions and the experimental data were observed. The ceiling temperature downstream of the fire decreased with an increase in the distance from the fire source, which is also the case for smoke optical density. The ceiling temperatures produced by the fire behind the vehicle were higher than those produced by the fire under the vehicle. The temperature variation along the central cross section of the tunnel shows that the highest ceiling temperature occurs 3~5 m downstream of the fire because the plume was tilted by the airflow inside the tunnel. Fire location had a significant impact on ceiling temperature development in the tunnel. The airflow conditions at the fire location significantly affect smoke and temperature distributions in the tunnel which will also affect the performance of detection systems.Units: SI