Research on Optimization Strategy of Wind Environment in High-Density Blocks Based on CFD Technology—Taking NanjingHehuatang Historic and Cultural Block as an Example
Under the concept of high-quality development,urban renewal initiatives are committed to enhancing urban quality and improving human settlement environments.Focusing on the medium-scale high-density urban areas,this paper takes the Nanjing Hehuatang Historical and Cultural Block as an example,comprehensively con-siders the temporal and spatial dimensions of the outdoor wind environment,selects the summer time dimension and the spatial dimension of pedestrian height,and explores the influence mechanism of the outdoor wind envi-ronment in high-density areas through simulation.Aiming at the three types of hierarchical spaces including nar-row alleys,courtyard spaces,and building group gaps,practical strategies for improving still-air zones,such as optimizing street layouts,adjusting enclosure degrees,and rationally planning open spaces,are provided to serve as a reference for the renewal of the built environment in high-density neighborhoods.