Abstract
The external pressure on buildings causes variations in the pressures inside the buildings. This paper describes a simulation of internal pressure fluctuations that the wind induces in nominally sealed but actually leaky low-rise buildings. The internal pressure was measured by wind-tunnel experiments with models of low-rise buildings having leaky apertures. A simulation model was constructed to idealize, as a laminar flow in a circular pipe, the leakage flow in an aperture induced by the difference between the external and internal pressures. The external pressure fluctuations obtained from the experiments were fed to the model to simulate the internal pressure fluctuations induced in nominally sealed but actually leaky low-rise buildings. This simulation shows that the simulated fluctuations of internal pressure serve as a good representation of the results of the experiments.
