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<p>The intensity of wind pressure varies depending on the object’s geometry, air’s density, and the direction and speed of the wind. When the structures with variable forms are examined, acceleration values and peak displacements increase due to the change in the direction and intensity of the wind flow, and vortex effect formation is observed on the rear and side surfaces of the structures. The vortex effect can cause oscillation and resonance in the direction perpendicular to the wind. In this study, the flow structures around three 10 cm × 5 cm × 5 cm diagonal buildings were investigated in detail using PIV at a distance of 6.25–10 cm. Instantaneous velocity fields, time-averaged velocity fields ⟨V⟩, streamlines ψ, vortex equivalent curves, and dimensionless translation equivalent curves ⟨ω⟩ were obtained and analyzed as a result of experimental measurements. It is observed that the size of the jet flow between the two buildings placed at the front and the vortices formed behind the buildings, as well as the locations of the vortex centers and separation points, change with the change in the building spacing. In addition, it is observed that the vortices formed around the rear building placed diagonally become larger, and the stopping point changes depending on the change in the distance.</p>

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Experimental Investigation of the Effect of Distance on Flow Structure in Large Buildings

  • 期刊论文

  • 发表日期：

    2026年1月1日

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  • Deniz Gölbaşı,
  • Ertan Buyruk,
  • Koray Karabulut,
  • Yaren Su Ağbaba

摘要

The intensity of wind pressure varies depending on the object’s geometry, air’s density, and the direction and speed of the wind. When the structures with variable forms are examined, acceleration values and peak displacements increase due to the change in the direction and intensity of the wind flow, and vortex effect formation is observed on the rear and side surfaces of the structures. The vortex effect can cause oscillation and resonance in the direction perpendicular to the wind. In this study, the flow structures around three 10 cm × 5 cm × 5 cm diagonal buildings were investigated in detail using PIV at a distance of 6.25–10 cm. Instantaneous velocity fields, time-averaged velocity fields ⟨V⟩, streamlines ψ, vortex equivalent curves, and dimensionless translation equivalent curves ⟨ω⟩ were obtained and analyzed as a result of experimental measurements. It is observed that the size of the jet flow between the two buildings placed at the front and the vortices formed behind the buildings, as well as the locations of the vortex centers and separation points, change with the change in the building spacing. In addition, it is observed that the vortices formed around the rear building placed diagonally become larger, and the stopping point changes depending on the change in the distance.