论文信息 - Effects of Green Roof on the Wind Field of a Low-rise Building

Effects of Green Roof on the Wind Field of a Low-rise Building

Abstract A three dimensional numerical wind tunnel based on the Navier-Stokes equations for viscous, incompressible fluid and LES method is established. Incoming wind field is generated based on the AIJ guidelines (2004). The numerical wind tunnel is validated against experimental results. A low-rise building with green roof is tested in the numerical wind tunnel. The results show that the green roof reduces the drag force of the building, cuts down the fluctuation near the roof, but has insignificant effect on the time-averaged velocity field.

[1] Yao Ren-tai. Examining the k-ε(RNG) model and LES of flow feature and turbulence dispersion around a building by means of wind tunnel tests , 2011 .

[2] Jianfeng Li,et al. CO2 absorption/emission and aerodynamic effects of trees on the concentrations in a street canyon in Guangzhou, China. , 2013, Environmental pollution.

[3] H. Werner,et al. Large-Eddy Simulation of Turbulent Flow Over and Around a Cube in a Plate Channel , 1993 .

[4] Gu Ming. Numerical Simulation of Steady Flow around a 3D High-rise Building , 2003 .