Review of the Numerical Simulation of the Wind and Pollutant Diffusion in Urban Street Canyon under the Influence of Trees

Author:

Wang Le12,Tian Wenxin3,Zheng Peilin1

Affiliation:

1. College of Civil Engineering, Xi’an Shiyou University, Xi’an 710065, China

2. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian 116024, China

3. China Energy Science and Technology Research Institute Co., Ltd., Nanjing 210023, China

Abstract

Tree is an essential factor affecting airflow and pollutant diffusion in the urban street canyon. The wind environment in the urban street canyon will be effectively improved by expounding the mechanism and implementing greening measures. Moreover, it will help decrease the pollutant concentration around the street canyon. This paper reviews the airflow and pollutant diffusion numerical simulation in the street canyon under the tree influence. Firstly, the numerical mathematical model used for pollutant diffusion and airflow in urban street canyons under the influence of trees is summarized. The representation of trees’ numerical mathematical model in the simulation domain is mainly proposed. Secondly, the wind environment and pollutant distribution factors influencing urban street canyons are elaborated and analyzed, including tree characteristics, layout, street canyon shape, and thermal. Furthermore, current research progress and deficiencies are discussed. Finally, the future research direction of wind environment and pollutant distribution simulation in urban streets under the influence of trees is pointed out.

Funder

Key Laboratory of Ocean Energy Utilization and Energy Conservation (Dalian University of Technology), Ministry of Education

Key Research and Development Program of Shaanxi

Natural Science Basic Research Plan in Shaanxi Province of China

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS

Publisher

MDPI AG

Subject

Building and Construction,Civil and Structural Engineering,Architecture

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