Study on Comprehensive Influence on Wind Environment of Piloti in Residential Blocks in Guangzhou, China

To get good outdoor ventilation and create shadow areas, piloti is commonly used in tropical and subtropical climate zones, but there are few studies reveal the comprehensive influence of piloti on wind environment in residential blocks, and furthermore, a coupled simulation method, which offers high precision prediction result, is seldom taken into consideration in piloti research field. This work took residential blocks in Guangzhou, China, as an example, by coupled simulation method, researched on the influence of piloti on wind environment of those areas under piloti and out of piloti. The result shows that, the wind velocity out of piloti area was clearly set into 2 parts, the low wind area and high wind area, and along with the increase of piloti ratio, the accumulative distribution rate of low wind velocity decreased, and the slope of average wind velocity was changed when piloti ratio was over 60 percent. The wind velocity under piloti area was very low when piloti ratio is 40 percent, and each 20 percent increase of piloti ratio could highly optimize the wind velocity under piloti area, however, a gentle slope was shown when piloti ratio reached 80 percent.