Paper Title
INVESTIGATING THE WIND ENVIRONMENT OF PEDESTRIAN BRIDGE DESIGN IN BETWEEN HIGH-RISE BUILDINGS

Abstract
Abstract - In recent years, cities have been embracing high-density vertical development, constructing more high-rise buildings in urban areas. However, this densification has led to the creation of dense street canyons that hinder the flow of wind, resulting in weak or nonexistent wind areas in the city center. These limited ventilation zones contribute to the degradation of the micro-environment. Therefore, it is important to consider the impact of elevated pedestrian networks on urban ventilation and wind power potential.To investigate the influence of different pedestrian bridge configurations in high-rise buildings, this study employs computational fluid dynamics (CFD) simulation techniques. A three-dimensional numerical model is created based on local microclimate conditions, urban situations, and bridge design guidelines. The research focuses on examining the air flow velocity and power density in street canyons and passage spaces in an ideal city where a pedestrian bridge is located in the middle of the downstream side. By varying the width of the pedestrian bridge, the net height inside the bridge, and the height of the screens on both sides, the study analyzes the distribution of airflow velocity within the pedestrian bridge to determine its potential for urban wind energy development.The results indicate that the installation of pedestrian bridges has minimal impact on the microclimate environment. However, narrowing the width of the pedestrian bridge reduces the path of airflow, resulting in lower flow resistance and higher relative speed. This finding suggests that narrower pedestrian bridges may have the potential for wind power development. Keywords - Pedestrian Bridge, Microclimate, Wind Environment, Computational Fluid Dynamics (CFD), Wind Power Potential