Author: Li, Yangluxi; Chen, Lei
Title: Study on the influence of voids on high-rise building on the wind environment Document date: 2019_12_5
ID: 1l21i0fz_52
Snippet: As can be seen from Figs. 8(a), (b) the WVA (wind velocity amplified factor) values of the case A are different with each other as the increased height. In case of a single void opening, the wind speed increases in the range of height within 40 m and it reduces at other heights. Under the condition of two holes and three holes, overall WVA enhances in the range of 20-80 m with larger than 1indicating that the building under this condition could b.....
Document: As can be seen from Figs. 8(a), (b) the WVA (wind velocity amplified factor) values of the case A are different with each other as the increased height. In case of a single void opening, the wind speed increases in the range of height within 40 m and it reduces at other heights. Under the condition of two holes and three holes, overall WVA enhances in the range of 20-80 m with larger than 1indicating that the building under this condition could be conducive to enhance the surrounding airflow quality. In addition, it can also be seen that the range of increase in wind speed is larger than that in a single void opening. Under the condition of four to five holes, the airflow velocity in the area behind the building is generally enhanced within the entire height range, and the wind speed amplification factor fluctuates around 1. In these cases, the vertical wind environment is the best, which is beneficial to the improvement of the airflow environment after the wind blows through the high-rise buildings. Therefore, compared with the one opening, the case of multi-voids can effectively increase the wind speed in the wind shadow area, promote the loss of pollutants and heat, which is conducive to the solution of the heat island effect problem.
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