覆冰导线气动特性及驰振风洞试验

利用风洞试验测量新月形和扇形覆冰导线在不同风速下的气动力特性，得到其阻力系数、升力系数和扭矩系数随风攻角的变化规律，结果表明在测试的风速范围内气动系数受风速的影响很小。在风洞中实现了覆冰导线节段模型的驰振模拟，得到不同风速下导线节段模型的驰振响应。进而用舞动数值模拟方法模拟驰振试验，得到与风洞试验一致的结果，验证了舞动数值模拟方法的正确性。试验结果为覆冰导线舞动研究提供了重要的参考数据。

Wind-tunnel Tests for Aerodynamic Characteristics and Galloping of Iced Conductors

The aerodynamic dynamic coefficients varying with the angle of wind attack of conductors with crescent-shaped and sector-shaped ice are measured by means of wind-tunnel test, and it is shown that the coefficients are nearly the same under different wind speeds. Galloping responses of iced conductor segment models under typical wind speeds are carried out by means of the wind-tunnel tests. The finite element models of the galloping test models are set up and their galloping responses are numerically simulated with the numerical simulation method for galloping of iced conductor presented by the authors, and the agreement between the numerical results and those obtained by the wind-tunnel tests justifies the numerical method. The results of the wind-tunnel test provide important data for the investigation on galloping of transmission lines.