Wind interference effect on an octagonal plan shaped tall building due to square plan shaped tall buildings
Journal Title: International journal of advanced structural engineering - Year 2016, Vol 8, Issue 1
Abstract
The variation of pressure at the faces of the octagonal plan shaped tall building due to interference of three square plan shaped tall building of same height is analysed by computational fluid dynamics module, namely ANSYS CFX for 0 wind incidence angle only. All the buildings are closely spaced (distance between two buildings varies from 0.4h to 2h, where h is the height of the building). Different cases depending upon the various positions of the square plan shaped buildings are analysed and compared with the octagonal plan shaped building in isolated condition. The comparison is presented in the form of interference factors (IF) and IF contours. Abnormal pressure distribution is observed in some cases. Shielding and channelling effect on the octagonal plan shaped building due to the presence of the interfering buildings are also noted. In the interfering condition the pressure distribution at the faces of the octagonal plan shaped building is not predictable. As the distance between the principal octagonal plan shaped building and the third square plan shaped interfering building increases the behaviour of faces becomes more systematic. The coefficient of pressure (Cp) for each face of the octagonal plan shaped building in each interfering case can be easily found if we multiply the IF with the Cp in the isolated case.
Authors and Affiliations
Rony Kar, Sujit Kumar Dalui
Keywords
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- EP ID EP210408
- DOI 10.1007/s40091-016-0115-z
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