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

Li, Yangluxi; Chen, Lei

As can be seen from Figs. 10(a), (b) , the wind speed distribution along the height direction fluctuates greatly. It can be seen that as the distribution of the openings along the vertical direction of the building is more discrete, the distribution of wind speed along the height direction in the wind shadow area behind the building will vary greatly. When R ranges between 1 and 3, the more uniform the wind speed distribution in the vertical direction of the building wind shadow area, the more stable the wind environment, and the smaller the wind loss. When R is less than 1 and greater than 3, the wind speed distribution in the wind shadow area is more unstable, and a larger wind shadow area will occur. The airflow velocity amplification factor will also be somewhat smaller, which is not conducive to heat loss. For example, When R is 0, it can be clearly seen that the wind speed amplification factor is gradually increasing in the range of 30-60 m. This is because the three openings are concentrated in the middle of the building, so the wind amplification effect at this place is the best. When R=4, the increase of the WVA values mainly concentrate in the range of 10-20 m, 40-50 m, and 90-100 m which distributes more discrete.