Numerical Investigation of the Variations in Velocity and Pressure due to Various Building Design with Pedestrian Wind
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Abstract
The numerical investigation of the effect of the shape of a high-rise building on pedestrian winds has been done. The study investigates the influence of building shapes on pedestrian-level wind comfort using an Ansys workbench and a virtual fluid domain of 600m×480m×800m. Square, rectangular, circular, hexagonal, and octagonal-shaped buildings have dimensions of (40m×40m×60m), (50m×40m×60m), (40m×60m) (D×H), (20m each side), and (15m each side), respectively. The variations in the shape of different buildings have a constant channel width of 12m. The results were compared to CFD models for the exact different house module using different velocities of wind with Large eddy simulation (LES) model. The study found that increasing the sides of buildings shows favourable pedestrian wind level characteristics. Circular shape offers a comfortable pedestrian level with their small channel space and low separation zone, setting them apart from other shapes like square, rectangular, hexagonal, and octagonal buildings. As a result of having the same width, square-shaped buildings have comparable pedestrian wind velocity in case -1 (C5 – C6 = 12 meters). This is because of the venturi effect, which causes wind speeds to be at their lowest at high space locations. The width of high-rise structures increases. There are a number of factors that influence wind levels in various forms, including wind direction, turbulence, and channel flow. While square and rectangular structures have a significant wind separation, circular buildings provide better walking conditions than their square and rectangular counterparts.
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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
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