Hydrodynamic simulation of wind load in tower for yakou micro-relief condition

Generally, selection of wind load and ice load are all based on the typical design condition while the effects of local distribution of wind load and icing character caused by specifically geographical environment are not considered, such as local character of terrain. We make the numerical calculation of aerodynamic process when transmission line crossing Yakou micro-relief and give the distributing rule of wind load. Also, the numerical fitting of influence rule of local wind speed distribution in micro-relief by calculated is performed and the modified coefficients of wind load in condition of typical micro-relief are got. Comparisons with literature are discussed.