Investigation on Air Ventilation within Idealised Urban Wind Corridors and the Influence of Structural Factors with Numerical Simulations

Wen Xu, Lushuang Zhao, Yunwei Zhang () and Zhaolin Gu ()
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Wen Xu: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Lushuang Zhao: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Yunwei Zhang: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Zhaolin Gu: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Sustainability, 2023, vol. 15, issue 18, 1-18

Abstract: Wind corridors are expected to be effective in alleviating the canopy urban heat island effect and air pollution. However, investigations on airflow characteristics within wind corridors, especially the influences of structural factors, are still limited. This current work performed numerical simulations on a group of idealised wind corridor models with different aspect ratios (ARs) and varying heights and/or widths along the corridors. Simulations revealed that the AR value had a vital influence on the wind speed, and an AR value of 0.1 facilitated the best ventilation conditions within the wind corridor. Structural variations along the corridor have a critical influence on ventilation, where the width contraction (contraction structure) and high-rise buildings (protrusion structure) would considerably weaken the wind speed within the corridors. The results suggested that wider and step-up structural design along the corridor should be encouraged in urban wind corridor planning, which would be helpful in promoting ventilation efficiency; but contraction structures should be prevented for primary wind corridor design.

Keywords: wind corridor; structural factor; ventilation efficiency; contraction structure (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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