Statistical Study of Indoor Velocity Distribution for Comfort Assessment

This paper deals with the study of natural ventilation in a building under tropical climates. Roomair distribution is analyzed with a statistical approach. The building is a cube with two opposing outdoor large openings. The cube is modeled using the RNG k-e model. A dimensionless velocity coefficient for different wind directions is evaluated for each indoor cell of the grid. Cumulative distribution function of this coefficient is calculated at different height to point out the influence of the wind direction. A numerical model is developped to predict room air distribution at different heights and different wind direction and also to estimate the percentage of the indoor volume which is in an acceptable thermal comfort level.