Large-eddy simulation of flow and pollutant dispersion in a 3D urban street model located in an unstable boundary layer

Large-eddy simulation (LES) based on the standard Smagorinsky model was employed to simulate microscale pollutant dispersion in a three-dimensional urban street model in an unstable boundary layer. First, an inflow turbulence generation technique based on Kataoka's method was investigated under unstable conditions. Moreover, the method was validated by comparing with experimental data. An objective of this study was to assess the efficiency of...