Aerodynamic Optimization of Façade Protrusions in Urban Street Canyons
Urban street canyons significantly influence local airflow, thermal comfort, and pollutant dispersion. Architectural façades, especially those featuring ribs or horizontal protrusions, play a crucial role in modifying these aerodynamic behaviors. Recent studies highlight that geometric parameters of façade elements—such as rib spacing and depth—can alter vortex structures and flow regimes within urban canyons. However, systematic investigations focusing on how these parameters affect turbulence and ventilation efficiency remain limited. This study uses large-eddy simulations (LES) to explore the aerodynamic response of street canyons to varying façade rib geometries, advancing the understanding of wind–structure interactions in dense urban settings. Influence of Façade Geometry on Urban Aerodynamics The geometric configuration of façades significantly determines airflow distribution and turbulence intensity around buildings. By analyzing variations in the ratio of rib separation di...