391 / 2019-02-26 14:05:10

An approach to urban natural ventilation potential analysis with GIS hydrological simulation

Urban natural ventilation potential,Hydrological simulation,Local Climate Zones,GIS

全体主题 > Spatial data collection, Analysis, and Visualization

The urban wind environment has a close relationship to the air pollution and outdoor human comfort. However, for ventilation study in whole urban scale, neither the numerical simulation (i.e., WRF, MM5, etc) nor computational fluid dynamics (CFD) method can provide accurate and efficient analysis on the urban natural ventilation potential. Based on the similarity in water flow and air flow, an efficient approach was proposed in this paper to investigate the urban natural ventilation potential: Firstly, rapidly quantify the urban morphology based on Local Climate Zone (LCZ), then construct the urban Digital Elevation Model (DEM); Afterwards, transfer the urban DEM in accordance with the direction and speed of prevailing wind. Finally, analyze the urban natural ventilation potential by using the hydrological simulation in GIS.