Abstract
The wind environment around two high-rise buildings in tandem arrangement at a Reynolds number of 1 000 were investigated using the lattice Boltzmann method. The numerical simulation results reveal some meaningful regularitiess about the formation and evolution of the complex vortex system around the high-rise buildings. A periodicity phenamenon in the process of the vortex evolution were observed in the numerical simulations. The space between the two buildings is nearly a silent regime with very low velocity, and this is disadvantageous for the transport and dilution of the pollutants. Wind velocity above the front building is relatively large and the maximum wind velocity is approximate 3.0 times the incoming wind velocity. These numerical results can be used in layout planning of high-rise residential buildings to create better environment for the purpose of ventilation and utilization of wind energy in urban area.
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