Abstract
A discrete vortex approximation which combines the vortex shedding model with the singularity method is developed for the analysis of unsteady separated flow past a bluff body. In this method. the flow past the body is assumed to be a potential flow except in the region of free shear layers which shed downstream from the separation points. Then the free shear layers are approximated by discrete vortices and the body is represented by vorticity distributions. This method can be easily applied to bluff bodies of complicated shapes. The method is applied to the calculations of the flow concerned with the wind engineering. The calculated results are compared with experiments and a good agreement is shown.
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