This article presents a study of the daylighting of rooms with windows facing the atrium and the numerical modelling of temperature stratification in the atrium using Computational Fluid Dynamics (CFD). The aim of the study is to verify the feasibility of daylighting for such rooms on different floors of the atrium through a glazed roof and temperature stratification under natural ventilation in an atrium with a tetrahedral glass roof. The methodology includes numerical modelling by the finite element method of daylighting of the atrium, followed by comparing the results with the authors’ data modelling the average brightness of the urban environment, and comparing the data of numerical modelling based on the application of the CFD method with the experimental data obtained by the authors in a field experiment at the real object of the Educational and Laboratory Building of the Moscow State University of Civil Engineering. The aim of this work is also to determine the applicability of the CFD method for numerical simulation of the behaviour and temperature distribution in the atrium of a building in the design and prediction of natural ventilation. The results of numerical modelling are in good agreement with the experimental results. The proposed numerical methods can be used for a comprehensive analysis of the dynamics of temperature in the atrium and daylighting of rooms facing the atrium when designing its translucent cover.
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• temperature stratification
• atrium
• daylighting
• ANSYS FLUENT
• numerical modelling of natural ventilation
• program – СFD