Rosier M, Grundmann R
Bibliographic info:
Hong Kong, City University, Division of Building Science and Technology, 2001, proceedings of IAQVEC 2001, "Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Fourth International Conference", held Changsha, Hunan, China, 2-5 October, 2

Based on measured wall temperatures made by an infrared camera the flow and temperature fields were computed for an atrium. The nature of this atrium is a large enclosure inside a school building surrounded by halls and classrooms. Within a hybrid ventilation concept the stack effect during the summer time is used to form the main driving force for the night cooling of the classrooms. Time dependant computations were carried out to obtain the flow and temperature fields inside the atrium under various boundary conditions. A numerical code based on the Finite Element Method was used as a tool. Steps of modelling and results of a winter case are presented and compared to available measurement data. The numerical code also enables the computation of the ventilating flow through large openings in the roof. First results of a simplified summer case are explained and discussed concerning reliability.