Computer analysis of stack effect in high-rise buildings

Describes a method of analysing the stack effect on a multi-storey building. The building is divided into zones and a computer programme calculates air-flow and pressure for each zone. Analysis is given for an example hypothetical building under different temperature, wind and air leakage conditions. Shows that the method can be used to evaluate the difficulty in opening doors due to pressure differentials and the noise resulting from air flowing through cracks around doors. Concludes that internal distribution of pressure differentials can be altered by design of both the building and the heating and ventilating system. Suggest use of this method for analysing movement of smoke