Abstract：Here, to study influences of ice crystal on aerodynamic force and galloping stability of iced conductor, the SST k-w turbulence model in the software FLUENT was used to simulate the flow field around a 3-D iced conductor with 5icicles. The 3-D iced conductor model with 5icicles was divided into 5 segments along its spanwise direction. The drag coefficient and lift coefficient of segment 3 at full wind attackangle were monitored. The influences of wind speed, length of icicle and distance between adjacent icicles on aerodynamic parameters of the conductorwere analyzed. Galloping force coefficient was calculated according to Den Hartog theory, and the vibration stability of the iced conductor was determined.Results showed that the shape of the iced conductor has a great influence on characteristics of fluid flow around it, and the flow field around itis obviously periodic; aerodynamic parameters of the iced conductor are more largely affected by wind attack angle, the difference between the maximum and minimum drag coefficient is 2.55, and the difference between the maximum and minimum lift coefficient is 5.83; wind speed, icicle length and distance between adjacent icicles have limited influence on aerodynamic parameters of the iced conductor; galloping force coefficient forparts of the iced conductor is less than zero (<0), the iced conductor is in an unstable state, and its galloping probability is very high.
祝贺，王刚，郭鑫. 冰棱对三维覆冰导线气动力特性影响研究[J]. 振动与冲击, 2021, 40(1): 212-217.
ZHU He, WANG Gang, GUO Xin. Influences of ice crystal on aerodynamic characteristics of a 3D iced conductor. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(1): 212-217.
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