Investigation of Wind Pressure Coefficient Distribution on High-rise Building due to Different Shape Modifications using Computer Simulation
DOI:
https://doi.org/10.15282/construction.v5i2.12257Keywords:
High-rise , Wind Pressure, Computational Fluid Dynamics, Computer Simulation, WindstormsAbstract
High-rise buildings are rapidly flourishing in various regions due to accelerating industrialization and increasing population density. The limited availability of land has driven this trend. Nonetheless, wind pressure significantly influences the design and structural stability of these tall structures. Therefore, it is crucial to account for wind loads when designing high-rise buildings, particularly in areas prone to strong winds, such as coastal regions, where winds can exert substantial force on the structure. This study focuses on analyzing wind pressure coefficient distribution around high-rise buildings by examining building shapes modifications and wind flow behavior through Computational Fluid Dynamics (CFD) simulations. The suggested tapering ratio and aerodynamic modification factor is 10% was applied to this study. The findings reveal that the maximum negative pressure coefficient (CP) or suction observed is -1.630, associated with the M4 model, which features a tapering design with rounded corners. This high suction is attributed to wind flow behavior for instance the flow separation and reattachment at the edge of the building's top (Zone 2). Except for the M4 model, which has a rounded edge on the leeward side, the thickness of the recirculation eddies is nearly uniform across all models. The M4 model's design results in a smaller wake region and reduced turbulence on the leeward side. Therefore, the M4 shape is the most effective in minimizing the impact of wind on the building structure.
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