Development of local-scale high-resolution atmospheric dispersion model using Large-Eddy Simulation. 5; Detailed simulation of turbulent flows and plume dispersion in an actual urban area under real meteorological conditions

Nakayama, Hiromasa   ; Takemi, Tetsuya*; Nagai, Haruyasu  

We extend the local-scale high-resolution atmospheric dispersion model using Large-Eddy Simulation (LES) to turbulent flows and plume dispersion in an actual urban area under real meteorological conditions by coupling with a meso-scale meteorological simulation model. The LES results of wind speed, wind direction, and concentration values are generally reproduced well. It is concluded that our coupling approach between LES and meso-scale meteorological models is effective to simulate turbulent flows and plume dispersion in urban areas under real meteorological conditions.