LARGE EDDY SIMULATION OF THE WIND FIELD AROUND A THREE-DIMENSIONAL HILL BASED ON AN IMPROVED NSRFG METHOD

The synthesis of the inflow turbulence with the characteristics of prescribed turbulent boundary layer wind fields for large eddy simulation (LES) is the key issue for accurately simulating the wind flow filed around hilly terrain. Based on the NSRFG (Narrowband Synthesis Random Flow Generation) method, an improved NSRFG (INSRFG) method was put forward by improving the spatial tuning factor γj,, introducing the time scale factor τ0 and the spectral energy correction coefficient λi. The