CALCULATIONS OF THE WIND-INDUCED PRESSURE DISTRIBUTION ON A MODEL-BUILDING

In the calculation of smoke flow within a building, or of smoke ingres s into a building surrounded by smoke, the effect of wind is very impo rtant, The wind flow sets up pressure variations around the building w hich play an important role in determining the flow within the buildin g and the rate of ingress of external smoke. This paper contains some results from the calculation of the pressure distribution around the s urface of an obstacle that represents a model building. The calculatio ns have been performed using the computational fluid dynamics model FL OW3D and are part of a validation exercise for the application of the code to smoke movement problems. Data from experiments in which a mode l building was placed in a wind tunnel to study smoke ingress, have be en compared with those from the simulations. The calculated results ar e found to be in excellent qualitative and good quantitative agreement with the experimental data.