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<p>Aeroelastic instability due to complex plan shapes govern the critical role in the design of irregular structures subjected to wind loads. This instability arises due to changes in wind flow patterns, particularly for high-rise infrastructure. Modifications in the vertical design of high-rise building, such as corner cuts, recessions, and rounded or slotted corners, may help to reduce the wind load. With the advancement in technology or improving computational resources, the analysis, investigation of wind effects using CFD are increasingly used during planning of any new construction. Present study examines the wind generated effects on a high-rise building using CFD approach by comparing three different turbulence models such as “<i>k-ɛ</i>, SST, and <i>k-ω</i>” on an isolated building as per IS 875: part-III, 2015, situated in terrain category-II. This numerical study takes different wind angles into account by varying from 0° to 90° at 30° intervals. Different wind flow patterns around the high structure were compared and the results are validated with different international standards along with the experimental studies done in past. The findings demonstrate that the SST and k-ω models provide more accurate CFD predictions of wind-induced effects than the k-ε model when compared and validated against wind tunnel experiments at various wind incidence angles.</p>

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Numerical Investigation of Wind Generated Effects Around a High-Rise Building Using Different Turbulence Model

  • 期刊论文

  • 发表日期：

    2026年7月31日

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  • Rahul Kumar Meena,
  • Ritu Raj,
  • S. Anbukumar

摘要

Aeroelastic instability due to complex plan shapes govern the critical role in the design of irregular structures subjected to wind loads. This instability arises due to changes in wind flow patterns, particularly for high-rise infrastructure. Modifications in the vertical design of high-rise building, such as corner cuts, recessions, and rounded or slotted corners, may help to reduce the wind load. With the advancement in technology or improving computational resources, the analysis, investigation of wind effects using CFD are increasingly used during planning of any new construction. Present study examines the wind generated effects on a high-rise building using CFD approach by comparing three different turbulence models such as “k-ɛ, SST, and k-ω” on an isolated building as per IS 875: part-III, 2015, situated in terrain category-II. This numerical study takes different wind angles into account by varying from 0° to 90° at 30° intervals. Different wind flow patterns around the high structure were compared and the results are validated with different international standards along with the experimental studies done in past. The findings demonstrate that the SST and k-ω models provide more accurate CFD predictions of wind-induced effects than the k-ε model when compared and validated against wind tunnel experiments at various wind incidence angles.