Development of local-scale high-resolution atmospheric dispersion model using Large-Eddy Simulation, 4; Turbulent flows and plume dispersion in an actual urban area

Nakayama, Hiromasa   ; Leitl, B.*; Harms, F.*; Nagai, Haruyasu  

We apply the LES model to turbulent flows and plume dispersion in an actual urban area. Although some of the turbulence and dispersion characteristics are quantitatively different from the wind tunnel experimental data, the distribution patterns are generally similar to those of the experiments. It is concluded that our LES model simulates reasonably the unsteady behavior of turbulent flows and plume dispersion even for complex heterogeneous urban areas.