Wind-driven ventilation of Double Skin Façades with vertical openings: Effects of opening configurations

Insufficient airflow in the cavity of Double Skin façade (DSF) systems has resulted overheating risk and resulting reduction thermal performance cooling dominant climates. Previous research focused more on buoyancy-driven natural ventilation, there is a lack utilising wind-driven ventilation as force for heat dispersion from cavity. Additionally, geometrical features wind direction influential factors wind-induced have not been addressed DSF studies. This paper presents detailed evaluation impact opening configurations an integrated tall building with respect to four orientations (0°, 30°, 60°, 90°) facade. The based three indicators: (i) induced rate, (ii) speed ratio, (iii) distribution across length. High-resolution 3D steady RANS CFD simulations were performed range sizes validated against wind-tunnel measurements. results show that ratio between areas front lateral openings critical factor improving at incident angle 0° < ? 30°. As increases 60° 90°, size tends be highest importance. Employing external skin (M3) can increase efficacy system broader size.