Simulation Research Of University Campus Wind Environment In Dalian

With the improvement of people’s health concept and environmental awareness,the quality of living environment is getting more and more attention,and the wind as one of the important factors which affects the living environment,the good wind environment not only can improve indoor air quality and reduce building energy consumption,but also has an important impact on the comfort and safety of outdoor pedestrian activities.The prediction,optimization and design of the wind environment will be an important part of urban design.With the rapid development of urban construction and the rise of campus construction,it is of great significance to study the existing problems of campus wind environment and explore its improvement measures,which is of great significance to the improvement of campus wind environment.This paper is started from the basic concepts of wind formation,classification,wind direction and wind speed,and explains the law of wind speed along the height.There are exponential law and logarithmic law.The evaluation criteria of the existing wind environment comfort are summarized and the wind environment comfort evaluation criteria suitable for this paper are established.The wind speed satisfying pedestrian comfort at pedestrian height is not more than 5m/s and does not affect the wind speed of outdoor pedestrian activity The upper limit is 7.5m/s.The On this basis,from the natural factors and artificial factors to explore the two aspects of architectural wind environmental factors.This paper introduces several commonly used computational fluid dynamics(CFD)software,and compares it with the corresponding technology of simulating the outdoor wind environment.PHOENICS is used as the simulation software.The numerical simulation of the research object,the calculation model of the existing building,the method of simulation calculation,the reasonable setting of the simulation range,the grid division and the boundary condition,and simulating the summer and winter campus wind environment respectively under the Dalian climatic conditions.And the campus is divided into five areas according to the corresponding location of the building.The wind environment problems and causes are discussed,and the wind environment is evaluated according to the pedestrian comfort.At the same time,combined with the field test to support the numerical simulation of the accuracy and reference,on the basis of the campus of the wind environment characteristics of the summary,and put forward to solve the wind environment.Through the analysis and summarization of the campus wind environment,the paper puts forward the wind environment optimization strategy of the university campus from the aspects of the overall layout of the campus,the optimization of the buildings,the design of the building monomer and the layout of the landscape.According to the optimization strategy,And then optimize the simulation of the wind environment of the university campus,and compare with the simulated results of the pre-university campus,provide theoretical support for the optimization strategy,summarize the inductive optimization strategy,and provide reference and reference for the construction and planning of the university campus in Dalian.