Peak Wind Force Coefficients of Porous Panels Mounted on the Roofs of High-Rise Buildings

Wind tunnel experiment and CFD (computational fluid dynamics) simulation with LES (large eddy simulation) have been conducted to investigate the characteristics of peak wind force coefficients of porous panels mounted on the roofs of high-rise buildings.First, aerodynamic modelling of porous panels was discussed.The relation between pressure loss coefficient and porosity was obtained.Then, a wind tunnel experiment was conducted to measure the wind forces (net wind pressures) acting on solid and porous panels mounted on the roof of a high-rise building.Because it was difficult to measure the pressures on both sides of thin, porous panel at the same location simultaneously, we proposed to use the roof edge pressures near the panel for the panel's inside-surface pressures.This experimental method was validated by a CFD simulation reproducing the wind tunnel experiment.The characteristics of peak wind force coefficients of porous panels mounted on the roofs of high-rise buildings were made clear.Finally, positive and negative peak wind force coefficients for designing the rooftop porous panels were proposed.