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A parametric, experimental analysis of conical vortices on curved roofs of low-rise buildings
Franchini, Sebastián and Pindado Carrion, Santiago and Meseguer Ruiz, José and Sanz Andres, Angel Pedro
A parametric, experimental analysis of conical vortices on curved roofs of low-rise buildings.
"Journal of Wind Engineering and Industrial Aerodynamics", v. 93
Different methods to reduce the high suction caused by conical vortices have been reported in the literature: vertical parapets, either solid or porous, placed at the roof edges being the most analysed configuration. Another method for alleviating the high suction peaks due to
conical vortices is the use of some non-standard parapet configuration like cantilever parapets. In this paper the influence of roof curvature on the conical vortex pattern appearing on a curved roof (Fig. 1) when subject to oblique winds is experimentally analysed by testing the mean pressure distribution on the curved roofs of low-rise building models in a wind tunnel. Also, the efficiency of cantilever parapets to reduce mean suction loads on curved roofs is experimentally checked. Very high suction loads have been measured on curved roofs, the magnitude of these high suction loads being significantly decreased when cantilever parapets are used. Thus, the suitability of these parapets to reduce wind pressure loads on curved roofs
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