The Comparative Analysis Of Wind Environment Of Street Valley Of Traditional And Modern Urban Morphology In Chengdu

The The wind environment is an important part of the outdoor microclimate,which is an important index to judge the outdoor public space.The street(valley)as a modern life of one of the important places,the wind environment will directly affect people's comfort experience.In particular,in the Chengdu area where the static wind rate is high,the characteristics of the street wind environment and its influencing factors are of great significance to improve the comfort of people and the air quality in the street.The paper first reviews and collects relevant literature and books at home and abroad,combs the concepts of traditional and modern urban forms,focuses.on the theory of wind environment,and finds out the turbulence model suitable for the street.Secondly,according to the actual working conditions,the turbulence model is used to simulate the wind turbulence model.According to the actual working conditions,the turbulence model can be used to verify whether the selected turbulence model can be used in the paper.Simulation of chapter simulation.Thirdly,the street area of traditional and modern urban form in Chengdu area is selected,and the wind environment in summer and winter is measured.The comparison is made from different street direction,aspect ratio,sky visual factor,rough surface roughness Causing changes in the size of the wind speed.Fourthly,the simulated wind turbulence model is used to simulate the street wind environment from two aspects.First,the summer and winter monsoon environments are simulated according to the measured data and compared with the actual measured wind speed.The simulation results show that the change of the influence factor value is caused by the simulation of the size of the wind impact factor(street aspect ratio,the relationship between the street and the dominant wind direction,the sky view factor and the rough surface roughness)Street wind environment changes.Finally,through above work summed up the street design strategy and recommendations based on the characteristics of the wind environment.