湍流度对覆冰八分裂导线舞动的影响分析.

Due to the influence of the land roughness, the lower the wind load, the higher turbulence intensity of wind. According to wind tunnel tests, it can be found that the aerodynamic coefficients of iced 8-bundled conductor are significantly different under different turbulence conditions, and the Den Hartog and Nigol coefficients determined by aerodynamic coefficients are also different. Based on the test results, the numerical analysis of the galloping of iced 8-bundled conductor is analyzed, and the response of galloping to the change of turbulence is investigated. The mathematical simulation results of galloping traces show that the galloping amplitudes of the iced conductors and the range of initial attack angle increase obviously under turbulence conditions. Moreover, the effects of different parameters on the galloping of iced 8-bundled conductors are researched. The parameters such as wind velocity, attack angle, and span length on the galloping of the 8-bundled conductors under turbulence wind loads are obtained by numerical method, which offers a theoretical basis for the study of the technique of anti-galloping. [ABSTRACT FROM AUTHOR]