TY - JOUR TI - Temperature stratification in a road tunnel AU - Kalech Brahim AU - Mehrez Zouhaier AU - Bouterra Mourad AU - El Cafsi Afif AU - Belghith Ali JN - Thermal Science PY - 2016 VL - 20 IS - 1 SP - 223 EP - 237 PT - Article AB - Tests were conducted to study the temperature distribution and stratification of smoke in a tunnel at one-dimensional propagation phase, the ventilation strategy varies in these trials. Numerical results showed that there are three layers of flow in the different strategies, the smoke layer, intermediate mixture layer and training fresh air layer. A barrier effect has been shown for the distribution of the temperature of the smoke upstream. The temperature and the velocity of movement of the smoke flow were influenced by the type of ventilation strategy. Stratification of the flow is characterized by a Richardson number. This numerical study requires validation with the work of Hu et al. [11]. However, a good agreement was obtained.