CFD Simulation Study On The Wind Environment Of High-rise Buildings In Xi'an

With the rapid development of our country' s economy,new first-tier cities are gradually increasing,after entering the new century.The Matthew effect of big cities has become stronger,the siphon effect on population has been significantly strengthened,and the influx of people has led to the golden age of the real estate industry.In order to make the maximum extent use of land,various types of high-rise buildings have appeared,and the density of urban buildings also has increased.This brings a series of wind environmental problems,which has a bad influence on the comfort of the human body.In this context,green building design integrated with ecological environment is proposed and a well-established wind environment is an important part of this.This paper discussed the concept of wind environment and the characteristics of high-level wind environment firstly,introduces domestic and international wind environment assessment methods,and then determined the research parameters of the wind environment,using the data of typical meteorological year in Xi'an from Chinese Standard Weather Data redivided the four seasons in Xi'an,and analyzed the dominant wind direction and wind speed of the four seasons.The principle of CFD(Computational Fluid Dynamics)and the use a software of Phoenics were introduced.Secondly,through the analysis of the simulated report on the wind environment of green buildings in Xi' an,the technical points for the preparation of the wind environment simulation report were summarized.The architectural orientation,building distance,built on stilts,and architectural forms in Xi' an area was analyzed and optimized the numerical analysis method.Finally,the wind environment of a typical residential area was simulated and optimized in order to make it more suitable for the requirements of green buildings.The research ideas,methods and conclusions of this paper can make the simulation report of wind environment more standardized,and provide some reference for the planning and layout of green buildings in Xi'an.