Large-eddy simulation of turbulent flow over a rough surface

摘要

A family of wall models is proposed that exhibits more satisfactory performance than\udprevious models for the large-eddy simulation (LES) of the turbulent boundary layer over a rough\udsurface. The time and horizontally averaged statistics such as mean vertical profiles of wind velocity,\udReynolds stress, turbulent intensities, turbulent kinetic energy and also spectra are compared with\udwind-tunnel experimental data. The purpose of the present study is to obtain simulated turbulent\udflows that are comparable with wind-tunnel measurements for use as the wind environment for the\udnumerical prediction by LES of source dispersion in the neutral atmospheric boundary layer.