Wind Energy Effective Utilization Simulation Research In The Built Environment

With the development of modern social economy, energy consumption grow with each passing day. Under the circumstances of aggravating energy crisis and the environment pollution of crisis, to solve the energy problem is imminent. Therefore, it is increasingly important to development the renewable and green energies for continuable development of society. As a kind of clean and renewable energy, wind energy has been attached importance to all the countries in the world. In the city building always with large quantity of electricity, so, taking advantage of city wind energy in the built environment to relieve the city energy consumption is a problem that be worth to take seriously.Based on the building concentrated area of wind energy utilization in the architecture environment, theoretical analysis, CFD numerical simulation and wind tunnel experiment method are combined in this paper.The related characteristics of the air flow around the diffuser buildings were analysed in detail, and the effect of wind increasing when changing the structure parameters of the diffuser buildings form and the wind collecting channel were discussed respectively. Then the wind collecting device was considered to combine with the buildings as the wind strengthened the assembled carrier, to be achieved the architectural form which have a greater efficiency of wind energy utilization.How to use wind energy of the diffusion body building was analysed in this paper. Firstly, five kinds of architectural model are analyzed on flow field of the diffuser channel, such as the cubic column, slant four prism, four trapezoid prism, semi cylindrical and flat plate diffuser buildings. The results show that:the wind strengthening effect of the cubic column, slant four prism, ladder four prismatic diffuser buildings is relatively poor, while the semi cylindrical, ellipsoidal, semi cylindrical and flat plate diffuser buildings on the wind speed increases effect are better. From the above conclusion, we can konw that the wind effect is better when the channel side is a streamlined; and the semi cylindrical and flat diffuser buildings wind effect is best. In view of these results, the half cylinder and flat diffuser buildings related parameters for wind energy increase effects were further explored,and the optimal size of wind energy utilization were achieved. On this basis, in different wind speed and the size of different flow direction angle,the wind increased effect and wind energy utilization angle of the wind collecting channel were further discussed. Finally, the integration of design of the semi cylindrical and flat diffuser buildings and streamline wind collecting channel were designed all-in-one, the influence when the wind energy utilization was in different installation positions were discussed respectively.Based on the theoretical analysis and numerical simulation, the optimal wind energy utilization effect architecture form of diffusers building are studied in wind tunnel. Compared the experiment result with the simulating result, the results show that they agree with each other well, so numerical simulation can be used as the powerful tool to analyse the complex flow field around the building.The wind energy utilization in the built environment is studied by using the methods of theoretical analysis, numerical simulation and wind tunnel experiment,.The better achieve wind power assembled architectural form and its wind energy utilization effect were discussed, and the diffuser buildings using wind characteristics were finally obtained, which are significant to the engineering practice.