Numerical Simulation Research Of The Outdoor Wind Field Of The High Building

With rapid development of computational fluid dynamics, HVAC designers can predict room air distribution and analyze all kinds of parameters, so they can select air distribution, which not only can safeguard arts demand, meet the thermal comfort of human body and create nicer internal air quality, but also attain energy-saving. At the same time, HVAC designers can do the simulation of the outdoor wind field of high building, can set different disposal of the buildings to make to get the outdoor fluid field that they want to get.High building is a kind of special building form, especially when several high buildings get together to form a kind of building group, for the outdoor wind field, there are complicated influence and eddy vorticity between high buildings. On the height of activity of human being, the outdoor wind field is related to person's safety. Also, it influences the diffuse of infectant and the out-wall desigh of the buildings. So it's very important to do this kind of research. This paper mainly use the commercial software of fluent to do some research. First focus on the characteristic of the outdoor wind field, on the foundation of the predigested model, use k ?εmodel to analyse the influence parameters of the outdoor wind field between the nearby buildings. The article also introduces the basal principle of the CFD technology. Through the understanding and the research to the CFD technology, we can make the CFD more and more perfect in the principle and the technology methods. Secondly, this paper do the research of the disposal of the high buildings, analyse the outdoor wind field of the eight kinds of disposal form of the high buildings, analyse the advantages and disadvantages of the eight buildings group forms to get the best kind of form. At last do the numerical simulation to compare with the wind tunnel test number, test the reliability of the numerical simulation and analyse it's advantages. The results of the numerical simulation give the theoretically reference and foundation for the city planning and high building planning.This numerical simulation example exhibits the important function and development space of CFD technology in the optimum designing of the dispose of the high buildings. So application and study of CFD should be moved ahead to design stage and our researchers should put more energy on the application and study of CFD technology.