Evaluation of ventilation effectiveness of microscale and middle-Scale urban green belt based on computer simulation

Abstract

As climate problems deteriorate nowadays, urban air path is playing a positive role in promoting urban air circulation, mitigating heat island effect, and reducing air pollution. Despite certain domestic and international researches on the planning and layout of urban air path, few are about the building factors of the air path itself. In this chapter, the authors performed computer quantitative simulation for microscale and middle-scale urban green belt, which is the object of study. By making single factor simulation and comparative analysis of the three factors: the air path width, the angle between air path direction and prevailing wind direction, and the height of obstacles in air path, the authors evaluated the ventilation effectiveness of air path, which can provide a reference for the planning and construction of air path during the rapid urbanization period in China.