Experimental study on air pollutants movement process in high-rise buildings under the help of wind tunnel

Abstract

In order to describe the movement process of air pollutants in high-rise buildings under the help of wind tunnel, an air pollutants' movement process experiment in high-rise buildings under the help of wind tunnel is designed. First, make a high-rise building model with height of 100 metres and 33 floors. The surface partial pressure coefficient of high-rise building model was measured by the wind pressure test program on the outer surface of the building. The concentration of air pollutants was detected by flame ionisation detector in building outer windows of different building floors using high-rise building model concentration test scheme. Pollutant concentration measurement and dimensionless representation method are given. Based on the coefficient distribution of wind pressure outside the building surface and the distribution of tracer gas concentration, the movement process of air pollutants in high-rise buildings under wind power is analysed, and the modelling analysis of motion process is completed. Experimental results show that the proposed method has high accuracy and application value in the process of air pollutant movement in high-rise buildings.