Pressure distributions around buildings are important factors affecting the air infiltration and ventilation of a building and consequently energy. Existing methods of determining pressure coefficients are costly both in terms of time and resources. This report aims to show the benefits of using a computational fluid dynamics (CFD) program in this field. Work was carried out to predict the pressure distribution around a sheltered building. The CFD program was used to investigate how pressure coeffieicnts vary with building separation and the degree of shelter offered by an upwind building.
The paper considers issues pertaining to the capabilities and limitations of computational methods for multidimensional turbulent flows of the type encountered in fluids engineering. It argues that CFD, whilst offering considerable predictive power and potential, is not yet sufficiently well established to be applied routinely to complex 3D flows, unless only a rough qualitative. statement is being sought.
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