Author/Authors :
Yang, Yi Department of Environmental Science and Engineering - University of Shanghai for Science and Technology, Shanghai, P R China , Zhang, Tianxiao Department of Environmental Science and Engineering - University of Shanghai for Science and Technology, Shanghai, P R China , Xie, Haiying Department of Environmental Science and Engineering - University of Shanghai for Science and Technology, Shanghai, P R China , Wang, Xiaoxiao Department of Environmental Science and Engineering - University of Shanghai for Science and Technology, Shanghai, P R China
Abstract :
Introduction: The impacts of building layout on pedestrian level wind
comfort and gas pollutant diffusion are simulated using computational fluid
dynamics method.
Materials and methods: The control equations of flow and pollutant diffusion
are solved by using ANSYS Fluent. The SIMPLE algorithm is selected for the
pressure-velocity coupling. The data from wind tunnel experiment at Tokyo
Polytechnic University is employed in the validation case.
Results: The velocity field and turbulence intensity at pedestrian level under
different building layouts are obtained. The distribution and evaluation of
wind comfort grade and pollutant concentration are given.
Conclusion: Building layouts have significant impacts on flow and pollutant
diffusion at pedestrian level. The outward staggered layout of building group
can improve both wind comfort grade and air quality, but the inward staggered
layout has the adverse effect. Non-staggered layouts are the worst in terms of
the wind comfort grade in this paper.
Keywords :
Building layout , Computational fluid dynamics (CFD) , Pedestrian level wind comfort , Gas pollutant diffusion
