Wind forces on porous panels placed along the perimeter of the rooftop of high-rise building

Tomoko Aihara, Yasushi Uematsu

Research output: Contribution to journalArticlepeer-review


Blind panels are often attached to the roof of a building along its perimeter to keep outdoor equipment from sight. Permeable materials are generally used in order to cool the equipment by winds. Furthermore, it is expected that the wind loads on such panels are smaller than those on solid panels. Previous studies of wind loads on blind panels focused on solid panels. Few studies have been made of permeable panels. The present paper investigates the wind force coefficients on solid and permeable blind panels installed on the roof of a high-rise building based on a wind tunnel experiment and a CFD simulation with LES, in which the porosity is changed from 0 to 80 %. In the wind tunnel experiment, the wind pressure coefficients on the roof near the panel are used for those on the panel’s interior surface for calculating the net wind force coefficients. Such a wind tunnel technique is verified by the numerical results. Furthermore, the simulated results indicate that large positive wind forces are induced in the upper part of solid panel, the mechanism of which is discussed based on the visualization of the flow around the panel. The effect of porosity on the wind force coefficients on permeable blind panels is also discussed.

Original languageEnglish
Pages (from-to)1853-1863
Number of pages11
JournalJournal of Structural and Construction Engineering
Issue number742
Publication statusPublished - 2017 Dec


  • CFD
  • LES
  • Permeable panel
  • Rooftop
  • Wind force
  • Wind tunnel experiment

ASJC Scopus subject areas

  • Architecture
  • Building and Construction


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