What question did this study set out to answer?

This study aims to understand how different building porosity configurations influence airflow and ventilation in urban street canyons.

June 13, 2026

Aerodynamic Response and Ventilation Enhancement in Urban Street Canyons through Building Porosity: A Comparative Numerical and Experimental Study

View Full Paper

Ask AI

Bookmark

Authors

Comparative study reveals how building opening shapes affect urban ventilation, implying design adjustments for better airflow.

This study aims to understand how different building porosity configurations influence airflow and ventilation in urban street canyons.
Conducted reduced-scale wind tunnel experiments and CFD simulations to analyze airflow patterns.
Validated the numerical model (RANS SST k — omega) against experimental data, achieving a Pearson correlation coefficient over 0.97.
Examined pedestrian-level velocity at 1.5 m height in relation to pore geometry and vertical positioning.
Identified that the rotated rectangular opening resulted in a normalized pedestrian velocity (U /Uref) of 0.91 while standard and circular openings showed velocities between 0.10 to 0.15.
Demonstrated that elevated openings create a skimming flow regime, while vertically extended slots enhance airflow at ground level.
Concluded that the vertical proximity of openings is crucial for improving ventilation in urban areas.

Lin et al. (2026) studied this question.

View Full Paper

Ask AI

Bookmark