Development of local-scale high-resolution atmospheric dispersion model using Large-Eddy Simulation, 3; Turbulent flow and plume dispersion in building arrays

Nakayama, Hiromasa   ; Jurcakova, K.*; Nagai, Haruyasu  

There is a potential problem that hazardous materials are accidentally or intentionally released within populated urban areas. In this study, we perform LESs of plume dispersion in idealized urban canopies where the surface geometries are represented by regularly arrayed obstacle arrays with various obstacle densities. In this paper, we examine the basic performance of the LES model by comparing to wind tunnel experiments.