Temperature distribution of room fire and window spill flame with a slope constrain

A reduced model is developed to study room fire window spill flame behavior, and square gasoline pool fires with the lengths of 15 cm, 25 cm and 35 cm are used as fire sources. The room fire and window spill flame temperature distributions are investigated under the constrain slopes of 0°, 45°, 60° and 75°. Results shows that, with the increase of slope angle, for the small fire(15 cm), the combustion within the room remains relatively complete so that temperature distributions of room fire and window spill plume change little; for the large fire(35 cm), the combustion within the room is relatively incomplete, a large amount of flame is observed to spill out through the opening, and spill flame temperature is high and also changes little; however, for the medium fire(25 cm), the influence of slope is remarkable, the combustion within the room transfers from relatively complete to incomplete, the room temperature both along the center line and in the corner near the window decreases, while that in the inner corner increases, and spill flame temperature and height are shown to increase greatly. When flame is observed to spill out directly, there exists a special low temperature domain for the vertical temperature distribution near the wall.