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《Engineering Journal of Wuhan University》 2017-02
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Dynamic aerodynamic characteristics of iced conductor with crescent shape under sine wind field

YANG Xiuping;REN Jun;ZHANG Zhe;HAO Shuying;Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechatronical System,Tianjin University of Technology;School of Mechanical Engineering,Tianjin University of Technology;  
In order to study the effect of unsteady wind on aerodynamic characteristics of iced conductor,using user-defined program function and dynamic mesh technology of software Fluent,the dynamic aerodynamic coefficients of crescent iced conductor during lateral and torsional vibration were calculated in sinusoidal wind field and compared with the results from simulation that conductor in steady wind field.The effects of frequency and amplitude in sine wind field on the aerodynamic forces are discussed.The results show that the dynamic aerodynamic coefficients are slightly higher than the steady wind ones.The effects of frequency in sine wind field on the mean value of drag and lift coefficients can be ignored.The mean values of dynamic aerodynamic increase with the increase of sine wind amplitude.So the effects of amplitude variety on aerodynamic characteristics should be taken into account for anti-galloping design of transmission lines in engineering.
【Fund】: 天津市自然科学基金项目(编号:11JCYBJC05800)
【CateGory Index】: TM752
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