Study on the influence of voids on high-rise building on the wind environment

Li, Yangluxi; Chen, Lei

This paper investigates the effect of the "voids" integrated on high-rise building on wind characteristic using CFD simulation method under ABL (atmospheric boundary layer) inlet condition. High-resolution mesh coupled steady RANS method are implemented to perform simulations for 14 cases with different holes positions and numbers. The perform indicator is constructed in the basis of the normalized wind velocity of WVA (wind velocity amplification factor) and pollutant concentration CR (concentration ratio). Whole CFD simulation is validated by a wind tunnel measurement by Tsang et al. (2012) of normalized wind speed. This research results could contribute architects to construct sky courts more reasonable and utilize special positions of voids to harvest wind energy to produce power. This paper includes six parts: Section 1 introduces some relevant researches done so far. Sections 2 and 3 describe simulated methodology and wind tunnel measurement validation. Section 4 mainly investigates the simulation results. Section 5 discusses about related future research direction. Section 6 presents final critical conclusions.