Study On The Outdoor Wind Environment Of Residential Area In Hefei Based On The CFD Technology

In recent years,more and more people pay attention to the comfort of the living environment,such as architects,developers and government departments,and put forward the concept of "green","low carbon" and "ecology".And these are closely linked with a good wind environment.Good wind environment is the premise of livable living area,to ensure the safety and comfort of outdoor environment in residential areas;Good wind environment design can effectively eliminate the pollutants in the residential area,protect the air quality inside and outside the residential area,so that people living in the area can breathe fresh air,improve people’s physical and mental health;Good wind environment design can improve the energy saving and emission reduction in the residential area,save energy for the summer cooling and winter heating.In addition,the outdoor wind environment of residential area is closely related to the thermal environment,such as the natural ventilation in summer and the wind proof measures in winter.However,with the continuous development of economy and construction technology,the outdoor wind environment of residential area is really better?In this paper,the outdoor wind environment of residential area in Hefei is taken as the research object,and the development,the characteristics and the main influencing factors are studied through the simulation of CFD technology.The thesis is divided into five chapters,the first chapter introduces the research background,the purpose and significance of the research,the past research,the object and method of the research,the framework and the technical route of the research.The second chapter summarized the relevant concepts and theories of the wind environment,clarifies the relationship between the wind environment and the people,the wind environment and the building.And analyzed three methods of wind environment observation,establishes the computer simulation,and compares and analyzes the commonly used simulation software of CFD computational fluid dynamics.Finally,this paper summarizes the process of Phoenics software simulation calculation,as well as the calculation of the relevant parameters involved in the specification and definition.The third chapter analyzes the geographical and climatic features of Hefei City,which belongs to the analysis of hot summer and cold winter area,summed up residential outdoor wind environment should be aimed at the wind environment in summer and winter,the seasonal transition of different needs,relevant laws and regulations of residential outdoor wind environment,the establishment of theevaluation suitable for Hefei city outdoor wind environment standard.In the fifth chapter,the characteristics and influencing factors of the outdoor wind environment in the residential area of Hefei city are obtained by quantitative analysis and qualitative analysis.