Optimization Design of Wind Environment in Commercial Pedestrian Streets Based on Field Measurement and Numerical Simulation

Yurong Li; Zhonggou Chen; Guoyi Zhang

doi:10.6911/

Authors

Yurong Li
Zhonggou Chen
Guoyi Zhang

DOI:

https://doi.org/10.6911/

Keywords:

Commercial pedestrian street; wind environment; greening layout; pedestrian wind comfort; CFD.

Abstract

Taking the core area of Hangzhou Hubin Pedestrian Street as the study subject, this research comprehensively adopts field measurements and CFD numerical simulation to evaluate the existing wind environment and carry out zoned greening layout optimization. The model accuracy is validated as good through field measurements. The existing wind environment exhibits two types of problems: strong wind discomfort zones in the middle section of the main street, and stagnant wind zones on the leeward sides of buildings. Differentiated greening strategies are proposed for seven zones (A-G). After optimization, the green coverage rate of the street area increases from 1.70% to 5.90%, and the proportion of the ideal wind speed range (1.04-5.00 m/s) increases by 9.76 percentage points, among which the proportion of the 1.04-3.40 m/s range increases significantly, while the proportion of the uncomfortable wind speed range (5.01-10.7 m/s) decreases by 9.08 percentage points. The study shows that refined greening layouts based on zoning characteristics can effectively improve the wind environment of commercial pedestrian streets.

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