The urban computing on the distribution of inhalable particulate matters to Smart City–based residential groups

摘要

Micro-climatic factors have provided dynamic conditions and thermal conditions for the distributionof suspended particulate matters. In this paper, courtyard-type residential clusters built inXi'an were selected as the research objects, through field survey, spot test, and CFD analog simulation.Plane layout physical models of the various comparable courtyard-type residential clusterswere abstracted from the perspective of urban design, reasonable numerical models were establishedby field test and CFD simulation, and then simulation study was conducted to the planeforms of different courtyard-type residential clusters; the influence of different forms on thedilution andspread of atmospheric pollutantswas studiedquantitatively. Finally,uponoverall considerationover the turbulence characteristics in the vertical direction and the distribution law ofpollutants under the influence of microclimate, it was concluded that the concentration of finePM2.5 in the space of node-type clusters in the plane layout of courtyard-type clusters performedworst in the comparative scope, the most favorable form was U type clusters, and the availableforms were windmill-type clusters and scattered-vertical type clusters.