Urban heat island mitigation via geometric configuration

Document Type

Article

Publication Date

8-1-2022

Abstract

The urban heat island (UHI) phenomenon has gained a global interest with the growing number of urbanized areas. This paper explores how the alteration of the geometrical canyon may influence the wind flow and air temperatures, which may control the UHI phenomenon. Computational fluid dynamics (CFD) simulations are conducted on different urban building configurations to understand how the wind velocity within the canyon would change with the alteration of the spacing ratio and shape, among other factors. For CFD simulations, larger y + values (compared to those recommended in the literature) can still yield accurate results for velocity and temperature investigations around buildings. Our analysis shows that step-up building configurations can significantly increase the canyon wind speed. The results show that the higher the building spacing ratio, the lower the average canyon temperatures.

Publication Source (Journal or Book title)

Theoretical and Applied Climatology

First Page

1329

Last Page

1355

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